diff --git a/src/libs/LocaleUtils.ts b/src/libs/LocaleUtils.ts
new file mode 100644
index 000000000000..1a63cbf579d5
--- /dev/null
+++ b/src/libs/LocaleUtils.ts
@@ -0,0 +1,17 @@
+import type {ValueOf} from 'type-fest';
+import CONST from '@src/CONST';
+
+function getLanguageFromLocale(locale: ValueOf<typeof CONST.LOCALES>): (typeof CONST.LANGUAGES)[number] {
+    switch (locale) {
+        case CONST.LOCALES.ES_ES:
+        case CONST.LOCALES.ES_ES_ONFIDO:
+        case CONST.LOCALES.ES:
+            return CONST.LOCALES.ES;
+        case CONST.LOCALES.EN:
+            return CONST.LOCALES.EN;
+        default:
+            return CONST.LOCALES.DEFAULT;
+    }
+}
+
+export default {getLanguageFromLocale};
diff --git a/src/pages/settings/Preferences/LanguagePage.js b/src/pages/settings/Preferences/LanguagePage.tsx
similarity index 56%
rename from src/pages/settings/Preferences/LanguagePage.js
rename to src/pages/settings/Preferences/LanguagePage.tsx
index 1df1565214c9..b577e006acfb 100644
--- a/src/pages/settings/Preferences/LanguagePage.js
+++ b/src/pages/settings/Preferences/LanguagePage.tsx
@@ -1,28 +1,21 @@
-import PropTypes from 'prop-types';
 import React from 'react';
-import _ from 'underscore';
 import HeaderWithBackButton from '@components/HeaderWithBackButton';
 import ScreenWrapper from '@components/ScreenWrapper';
 import SelectionList from '@components/SelectionList';
 import RadioListItem from '@components/SelectionList/RadioListItem';
-import withLocalize, {withLocalizePropTypes} from '@components/withLocalize';
+import useLocalize from '@hooks/useLocalize';
 import Navigation from '@libs/Navigation/Navigation';
 import * as App from '@userActions/App';
 import CONST from '@src/CONST';
 
-const propTypes = {
-    ...withLocalizePropTypes,
+function LanguagePage() {
+    const {translate, preferredLocale} = useLocalize();
 
-    /** The preferred language of the App */
-    preferredLocale: PropTypes.string.isRequired,
-};
-
-function LanguagePage(props) {
-    const localesToLanguages = _.map(CONST.LANGUAGES, (language) => ({
+    const localesToLanguages = CONST.LANGUAGES.map((language) => ({
         value: language,
-        text: props.translate(`languagePage.languages.${language}.label`),
+        text: translate(`languagePage.languages.${language}.label`),
         keyForList: language,
-        isSelected: props.preferredLocale === language,
+        isSelected: preferredLocale === language,
     }));
 
     return (
@@ -31,20 +24,19 @@ function LanguagePage(props) {
             testID={LanguagePage.displayName}
         >
             <HeaderWithBackButton
-                title={props.translate('languagePage.language')}
+                title={translate('languagePage.language')}
                 onBackButtonPress={() => Navigation.goBack()}
             />
             <SelectionList
                 sections={[{data: localesToLanguages}]}
                 ListItem={RadioListItem}
                 onSelectRow={(language) => App.setLocaleAndNavigate(language.value)}
-                initiallyFocusedOptionKey={_.find(localesToLanguages, (locale) => locale.isSelected).keyForList}
+                initiallyFocusedOptionKey={localesToLanguages.find((locale) => locale.isSelected)?.keyForList}
             />
         </ScreenWrapper>
     );
 }
 
 LanguagePage.displayName = 'LanguagePage';
-LanguagePage.propTypes = propTypes;
 
-export default withLocalize(LanguagePage);
+export default LanguagePage;
diff --git a/src/pages/settings/Preferences/PreferencesPage.js b/src/pages/settings/Preferences/PreferencesPage.tsx
similarity index 86%
rename from src/pages/settings/Preferences/PreferencesPage.js
rename to src/pages/settings/Preferences/PreferencesPage.tsx
index 36a26ccffaa2..5849f323dc36 100755
--- a/src/pages/settings/Preferences/PreferencesPage.js
+++ b/src/pages/settings/Preferences/PreferencesPage.tsx
@@ -1,7 +1,6 @@
-import lodashGet from 'lodash/get';
-import PropTypes from 'prop-types';
 import React from 'react';
 import {View} from 'react-native';
+import type {OnyxEntry} from 'react-native-onyx';
 import {withOnyx} from 'react-native-onyx';
 import HeaderWithBackButton from '@components/HeaderWithBackButton';
 import * as Illustrations from '@components/Icon/Illustrations';
@@ -15,33 +14,28 @@ import Text from '@components/Text';
 import useLocalize from '@hooks/useLocalize';
 import useThemeStyles from '@hooks/useThemeStyles';
 import useWindowDimensions from '@hooks/useWindowDimensions';
+import LocaleUtils from '@libs/LocaleUtils';
 import Navigation from '@libs/Navigation/Navigation';
 import * as User from '@userActions/User';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
 import ROUTES from '@src/ROUTES';
+import type {PreferredTheme, PriorityMode, User as UserType} from '@src/types/onyx';
 
-const propTypes = {
+type PreferencesPageOnyxProps = {
     /** The chat priority mode */
-    priorityMode: PropTypes.string,
+    priorityMode: PriorityMode;
 
     /** The app's color theme */
-    preferredTheme: PropTypes.string,
+    preferredTheme: PreferredTheme;
 
     /** The details about the user that is signed in */
-    user: PropTypes.shape({
-        /** Whether or not the user is subscribed to news updates */
-        isSubscribedToNewsletter: PropTypes.bool,
-    }),
+    user: OnyxEntry<UserType>;
 };
 
-const defaultProps = {
-    priorityMode: CONST.PRIORITY_MODE.DEFAULT,
-    preferredTheme: CONST.DEFAULT_THEME,
-    user: {},
-};
+type PreferencesPageProps = PreferencesPageOnyxProps;
 
-function PreferencesPage(props) {
+function PreferencesPage({priorityMode, preferredTheme, user}: PreferencesPageProps) {
     const styles = useThemeStyles();
     const {translate, preferredLocale} = useLocalize();
     const {isSmallScreenWidth} = useWindowDimensions();
@@ -83,7 +77,7 @@ function PreferencesPage(props) {
                                 <View style={[styles.flex1, styles.alignItemsEnd]}>
                                     <Switch
                                         accessibilityLabel={translate('preferencesPage.receiveRelevantFeatureUpdatesAndExpensifyNews')}
-                                        isOn={lodashGet(props.user, 'isSubscribedToNewsletter', true)}
+                                        isOn={user?.isSubscribedToNewsletter ?? true}
                                         onToggle={User.updateNewsletterSubscription}
                                     />
                                 </View>
@@ -95,28 +89,28 @@ function PreferencesPage(props) {
                                 <View style={[styles.flex1, styles.alignItemsEnd]}>
                                     <Switch
                                         accessibilityLabel={translate('preferencesPage.muteAllSounds')}
-                                        isOn={lodashGet(props.user, 'isMutedAllSounds', false)}
+                                        isOn={user?.isMutedAllSounds ?? false}
                                         onToggle={User.setMuteAllSounds}
                                     />
                                 </View>
                             </View>
                             <MenuItemWithTopDescription
                                 shouldShowRightIcon
-                                title={translate(`priorityModePage.priorityModes.${props.priorityMode}.label`)}
+                                title={translate(`priorityModePage.priorityModes.${priorityMode ?? CONST.PRIORITY_MODE.DEFAULT}.label`)}
                                 description={translate('priorityModePage.priorityMode')}
                                 onPress={() => Navigation.navigate(ROUTES.SETTINGS_PRIORITY_MODE)}
                                 wrapperStyle={styles.sectionMenuItemTopDescription}
                             />
                             <MenuItemWithTopDescription
                                 shouldShowRightIcon
-                                title={translate(`languagePage.languages.${preferredLocale}.label`)}
+                                title={translate(`languagePage.languages.${LocaleUtils.getLanguageFromLocale(preferredLocale)}.label`)}
                                 description={translate('languagePage.language')}
                                 onPress={() => Navigation.navigate(ROUTES.SETTINGS_LANGUAGE)}
                                 wrapperStyle={styles.sectionMenuItemTopDescription}
                             />
                             <MenuItemWithTopDescription
                                 shouldShowRightIcon
-                                title={translate(`themePage.themes.${props.preferredTheme || CONST.THEME.DEFAULT}.label`)}
+                                title={translate(`themePage.themes.${preferredTheme ?? CONST.THEME.DEFAULT}.label`)}
                                 description={translate('themePage.theme')}
                                 onPress={() => Navigation.navigate(ROUTES.SETTINGS_THEME)}
                                 wrapperStyle={styles.sectionMenuItemTopDescription}
@@ -129,11 +123,9 @@ function PreferencesPage(props) {
     );
 }
 
-PreferencesPage.propTypes = propTypes;
-PreferencesPage.defaultProps = defaultProps;
 PreferencesPage.displayName = 'PreferencesPage';
 
-export default withOnyx({
+export default withOnyx<PreferencesPageProps, PreferencesPageOnyxProps>({
     priorityMode: {
         key: ONYXKEYS.NVP_PRIORITY_MODE,
     },
diff --git a/src/pages/settings/Preferences/PriorityModePage.js b/src/pages/settings/Preferences/PriorityModePage.tsx
similarity index 50%
rename from src/pages/settings/Preferences/PriorityModePage.js
rename to src/pages/settings/Preferences/PriorityModePage.tsx
index 05c0546c2e41..677d3813acd7 100644
--- a/src/pages/settings/Preferences/PriorityModePage.js
+++ b/src/pages/settings/Preferences/PriorityModePage.tsx
@@ -1,49 +1,54 @@
-import PropTypes from 'prop-types';
 import React, {useCallback} from 'react';
 import {withOnyx} from 'react-native-onyx';
-import _, {compose} from 'underscore';
+import type {ValueOf} from 'type-fest';
 import HeaderWithBackButton from '@components/HeaderWithBackButton';
 import ScreenWrapper from '@components/ScreenWrapper';
 import SelectionList from '@components/SelectionList';
 import RadioListItem from '@components/SelectionList/RadioListItem';
 import Text from '@components/Text';
-import withLocalize, {withLocalizePropTypes} from '@components/withLocalize';
+import useLocalize from '@hooks/useLocalize';
 import useThemeStyles from '@hooks/useThemeStyles';
 import Navigation from '@libs/Navigation/Navigation';
 import * as User from '@userActions/User';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
+import type {PriorityMode} from '@src/types/onyx';
 
-const propTypes = {
-    /** The chat priority mode */
-    priorityMode: PropTypes.string,
-
-    ...withLocalizePropTypes,
+type PriorityModeItem = {
+    value: ValueOf<typeof CONST.PRIORITY_MODE>;
+    text: string;
+    alternateText: string;
+    keyForList: ValueOf<typeof CONST.PRIORITY_MODE>;
+    isSelected: boolean;
 };
 
-const defaultProps = {
-    priorityMode: CONST.PRIORITY_MODE.DEFAULT,
+type PriorityModePageOnyxProps = {
+    /** The chat priority mode */
+    priorityMode: PriorityMode;
 };
 
-function PriorityModePage(props) {
+type PriorityModePageProps = PriorityModePageOnyxProps;
+
+function PriorityModePage({priorityMode}: PriorityModePageProps) {
+    const {translate} = useLocalize();
     const styles = useThemeStyles();
-    const priorityModes = _.map(_.values(CONST.PRIORITY_MODE), (mode) => ({
+    const priorityModes = Object.values(CONST.PRIORITY_MODE).map<PriorityModeItem>((mode) => ({
         value: mode,
-        text: props.translate(`priorityModePage.priorityModes.${mode}.label`),
-        alternateText: props.translate(`priorityModePage.priorityModes.${mode}.description`),
+        text: translate(`priorityModePage.priorityModes.${mode}.label`),
+        alternateText: translate(`priorityModePage.priorityModes.${mode}.description`),
         keyForList: mode,
-        isSelected: props.priorityMode === mode,
+        isSelected: priorityMode === mode,
     }));
 
     const updateMode = useCallback(
-        (mode) => {
-            if (mode.value === props.priorityMode) {
+        (mode: PriorityModeItem) => {
+            if (mode.value === priorityMode) {
                 Navigation.goBack();
                 return;
             }
             User.updateChatPriorityMode(mode.value);
         },
-        [props.priorityMode],
+        [priorityMode],
     );
 
     return (
@@ -52,29 +57,24 @@ function PriorityModePage(props) {
             testID={PriorityModePage.displayName}
         >
             <HeaderWithBackButton
-                title={props.translate('priorityModePage.priorityMode')}
+                title={translate('priorityModePage.priorityMode')}
                 onBackButtonPress={() => Navigation.goBack()}
             />
-            <Text style={[styles.mh5, styles.mv3]}>{props.translate('priorityModePage.explainerText')}</Text>
+            <Text style={[styles.mh5, styles.mv3]}>{translate('priorityModePage.explainerText')}</Text>
             <SelectionList
                 sections={[{data: priorityModes}]}
                 ListItem={RadioListItem}
                 onSelectRow={updateMode}
-                initiallyFocusedOptionKey={_.find(priorityModes, (mode) => mode.isSelected).keyForList}
+                initiallyFocusedOptionKey={priorityModes.find((mode) => mode.isSelected)?.keyForList}
             />
         </ScreenWrapper>
     );
 }
 
 PriorityModePage.displayName = 'PriorityModePage';
-PriorityModePage.propTypes = propTypes;
-PriorityModePage.defaultProps = defaultProps;
 
-export default compose(
-    withLocalize,
-    withOnyx({
-        priorityMode: {
-            key: ONYXKEYS.NVP_PRIORITY_MODE,
-        },
-    }),
-)(PriorityModePage);
+export default withOnyx<PriorityModePageProps, PriorityModePageOnyxProps>({
+    priorityMode: {
+        key: ONYXKEYS.NVP_PRIORITY_MODE,
+    },
+})(PriorityModePage);
diff --git a/src/pages/settings/Preferences/ThemePage.js b/src/pages/settings/Preferences/ThemePage.tsx
similarity index 74%
rename from src/pages/settings/Preferences/ThemePage.js
rename to src/pages/settings/Preferences/ThemePage.tsx
index 0724eb286620..f879a7a259ea 100644
--- a/src/pages/settings/Preferences/ThemePage.js
+++ b/src/pages/settings/Preferences/ThemePage.tsx
@@ -1,7 +1,5 @@
-import PropTypes from 'prop-types';
 import React from 'react';
 import {withOnyx} from 'react-native-onyx';
-import _ from 'underscore';
 import HeaderWithBackButton from '@components/HeaderWithBackButton';
 import ScreenWrapper from '@components/ScreenWrapper';
 import SelectionList from '@components/SelectionList';
@@ -13,24 +11,24 @@ import Navigation from '@libs/Navigation/Navigation';
 import * as User from '@userActions/User';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
+import type {PreferredTheme} from '@src/types/onyx';
 
-const propTypes = {
+type ThemePageOnyxProps = {
     /** The theme of the app */
-    preferredTheme: PropTypes.string,
+    preferredTheme: PreferredTheme;
 };
 
-const defaultProps = {
-    preferredTheme: CONST.THEME.DEFAULT,
-};
+type ThemePageProps = ThemePageOnyxProps;
 
-function ThemePage(props) {
+function ThemePage({preferredTheme}: ThemePageProps) {
     const styles = useThemeStyles();
     const {translate} = useLocalize();
-    const localesToThemes = _.map(_.values(_.omit(CONST.THEME, 'DEFAULT', 'FALLBACK')), (theme) => ({
+    const {DEFAULT, FALLBACK, ...themes} = CONST.THEME;
+    const localesToThemes = Object.values(themes).map((theme) => ({
         value: theme,
         text: translate(`themePage.themes.${theme}.label`),
         keyForList: theme,
-        isSelected: (props.preferredTheme || CONST.THEME.DEFAULT) === theme,
+        isSelected: (preferredTheme ?? CONST.THEME.DEFAULT) === theme,
     }));
 
     return (
@@ -51,17 +49,15 @@ function ThemePage(props) {
                 sections={[{data: localesToThemes}]}
                 ListItem={RadioListItem}
                 onSelectRow={(theme) => User.updateTheme(theme.value)}
-                initiallyFocusedOptionKey={_.find(localesToThemes, (theme) => theme.isSelected).keyForList}
+                initiallyFocusedOptionKey={localesToThemes.find((theme) => theme.isSelected)?.keyForList}
             />
         </ScreenWrapper>
     );
 }
 
 ThemePage.displayName = 'ThemePage';
-ThemePage.propTypes = propTypes;
-ThemePage.defaultProps = defaultProps;
 
-export default withOnyx({
+export default withOnyx<ThemePageProps, ThemePageOnyxProps>({
     preferredTheme: {
         key: ONYXKEYS.PREFERRED_THEME,
     },
diff --git a/src/types/onyx/PreferredTheme.ts b/src/types/onyx/PreferredTheme.ts
new file mode 100644
index 000000000000..408748ad06ea
--- /dev/null
+++ b/src/types/onyx/PreferredTheme.ts
@@ -0,0 +1,7 @@
+import type {OnyxEntry} from 'react-native-onyx';
+import type {ValueOf} from 'type-fest';
+import type CONST from '@src/CONST';
+
+type PreferredTheme = OnyxEntry<ValueOf<typeof CONST.THEME>>;
+
+export default PreferredTheme;
diff --git a/src/types/onyx/PriorityMode.ts b/src/types/onyx/PriorityMode.ts
new file mode 100644
index 000000000000..224c86867f35
--- /dev/null
+++ b/src/types/onyx/PriorityMode.ts
@@ -0,0 +1,7 @@
+import type {OnyxEntry} from 'react-native-onyx';
+import type {ValueOf} from 'type-fest';
+import type CONST from '@src/CONST';
+
+type PriorityMode = OnyxEntry<ValueOf<typeof CONST.PRIORITY_MODE>>;
+
+export default PriorityMode;
diff --git a/src/types/onyx/index.ts b/src/types/onyx/index.ts
index d12b0a22bba2..e3118538258e 100644
--- a/src/types/onyx/index.ts
+++ b/src/types/onyx/index.ts
@@ -40,6 +40,8 @@ import type {PolicyMembers} from './PolicyMember';
 import type PolicyMember from './PolicyMember';
 import type {PolicyReportField, PolicyReportFields} from './PolicyReportField';
 import type {PolicyTag, PolicyTagList, PolicyTags} from './PolicyTag';
+import type PreferredTheme from './PreferredTheme';
+import type PriorityMode from './PriorityMode';
 import type PrivatePersonalDetails from './PrivatePersonalDetails';
 import type RecentlyUsedCategories from './RecentlyUsedCategories';
 import type RecentlyUsedReportFields from './RecentlyUsedReportFields';
@@ -114,6 +116,8 @@ export type {
     PolicyTag,
     PolicyTags,
     PolicyTagList,
+    PreferredTheme,
+    PriorityMode,
     PrivatePersonalDetails,
     RecentWaypoint,
     RecentlyUsedCategories,