[Google Pixel 6 Pro] foobar66:
Below is my most recent list of 'hidden' APKs (stuff that I don't use) ... but please check for yourself.

/system/app/BasicDreams/BasicDreams.apk
/system/app/BluetoothMidiService/BluetoothMidiService.apk
/system/app/BookmarkProvider/BookmarkProvider.apk
/system/app/CompanionDeviceManager/CompanionDeviceManager.apk
/system/app/EasterEgg/EasterEgg.apk
/system/app/GooglePrintRecommendationService/GooglePrintRecommendationService.apk
/system/app/HTMLViewer/HTMLViewer.apk
/system/app/LiveWallpapersPicker/LiveWallpapersPicker.apk
/system/app/NfcNci/NfcNci.apk
/system/app/PacProcessor/PacProcessor.apk
/system/app/PartnerBookmarksProvider/PartnerBookmarksProvider.apk
/system/app/SimAppDialog/SimAppDialog.apk
/system/app/Stk/Stk.apk
/system/app/WallpaperBackup/WallpaperBackup.apk
/system/priv-app/BackupRestoreConfirmation/BackupRestoreConfirmation.apk
/system/priv-app/BuiltInPrintService/BuiltInPrintService.apk
/system/priv-app/CallLogBackup/CallLogBackup.apk
/system/priv-app/CellBroadcastLegacyApp/CellBroadcastLegacyApp.apk
/system/priv-app/InputDevices/InputDevices.apk
/system/priv-app/LocalTransport/LocalTransport.apk
/system/priv-app/ManagedProvisioning/ManagedProvisioning.apk
/system/priv-app/MmsService/MmsService.apk
/system/priv-app/MtpService/MtpService.apk
/system/priv-app/MusicFX/MusicFX.apk
/system/priv-app/SharedStorageBackup/SharedStorageBackup.apk
/system/priv-app/TagGoogle/TagGoogle.apk
/system/priv-app/Traceur/Traceur.apk
/product/app/DiagnosticsToolPrebuilt/DiagnosticsToolPrebuilt.apk
/product/app/DevicePolicyPrebuilt/DevicePolicyPrebuilt.apk
/product/app/LocationHistoryPrebuilt/LocationHistoryPrebuilt.apk
/product/app/MicropaperPrebuilt/MicropaperPrebuilt.apk
/product/app/PixelWallpapers2021/PixelWallpapers2021.apk
/product/app/SafetyRegulatoryInfo/SafetyRegulatoryInfo.apk
/product/app/SoundAmplifierPrebuilt/SoundAmplifierPrebuilt.apk
/product/app/SSRestartDetector/SSRestartDetector.apk
/product/app/talkback/talkback.apk
/product/app/Videos/Videos.apk
/product/app/VZWAPNLib/VZWAPNLib.apk
/product/app/VoiceAccessPrebuilt/VoiceAccessPrebuilt.apk
/product/app/YouTubeMusicPrebuilt/YouTubeMusicPrebuilt.apk
/product/priv-app/AppDirectedSMSService/AppDirectedSMSService.apk
/product/priv-app/BetterBug/BetterBug.apk
/product/priv-app/CarrierMetrics/CarrierMetrics.apk
/product/priv-app/CarrierWifi/CarrierWifi.apk
/product/priv-app/CbrsNetworkMonitor/CbrsNetworkMonitor.apk
/product/priv-app/ConnMO/ConnMO.apk
/product/priv-app/DCMO/DCMO.apk
/product/priv-app/DiagMon/DiagMon.apk
/product/priv-app/DMService/DMService.apk
/product/priv-app/DreamlinerPrebuilt/DreamlinerPrebuilt.apk
/product/priv-app/DreamlinerUpdater/DreamlinerUpdater.apk
/product/priv-app/EuiccGoogle/EuiccGoogle.apk
/product/priv-app/GoogleOneTimeInitializer/GoogleOneTimeInitializer.apk
/product/priv-app/GoogleRestorePrebuilt/GoogleRestorePrebuilt.apk
/product/priv-app/HelpRtcPrebuilt/HelpRtcPrebuilt.apk
/product/priv-app/HotwordEnrollmentOKGoogleFUSION/HotwordEnrollmentOKGoogleFUSION.apk
/product/priv-app/HotwordEnrollmentXGoogleFUSION/HotwordEnrollmentXGoogleFUSION.apk
/product/priv-app/Iwlan/Iwlan.apk
/product/priv-app/MaestroPrebuilt/MaestroPrebuilt.apk
/product/priv-app/OemDmTrigger/OemDmTrigger.apk
/product/priv-app/OTAConfigNoZeroTouchPrebuilt/OTAConfigNoZeroTouchPrebuilt.apk
/product/priv-app/PartnerSetupPrebuilt/PartnerSetupPrebuilt.apk
/product/priv-app/PixelLiveWallpaperPrebuilt/PixelLiveWallpaperPrebuilt.apk
/product/priv-app/SafetyHubPrebuilt/SafetyHubPrebuilt.apk
/product/priv-app/SCONE/SCONE.apk
/product/priv-app/ScribePrebuilt/ScribePrebuilt.apk
/product/priv-app/SetupWizardPrebuilt/SetupWizardPrebuilt.apk
/product/priv-app/Showcase/Showcase.apk
/product/priv-app/TipsPrebuilt/TipsPrebuilt.apk
/product/priv-app/WellbeingPrebuilt/WellbeingPrebuilt.apk
/product/overlay/CellBroadcastReceiverOverlay/CellBroadcastReceiverOverlay.apk
/product/overlay/CellBroadcastServiceOverlay/CellBroadcastServiceOverlay.apk
/product/overlay/DisplayCutoutAvoidAppsInCutout/AvoidAppsInCutoutOverlay.apk
/product/overlay/DisplayCutoutEmulationCorner/DisplayCutoutEmulationCornerOverlay.apk
/product/overlay/DisplayCutoutEmulationDouble/DisplayCutoutEmulationDoubleOverlay.apk
/product/overlay/DisplayCutoutEmulationHole/DisplayCutoutEmulationHoleOverlay.apk
/product/overlay/DisplayCutoutEmulationTall/DisplayCutoutEmulationTallOverlay.apk
/product/overlay/DisplayCutoutEmulationWaterfall/DisplayCutoutEmulationWaterfallOverlay.apk
/product/overlay/DisplayCutoutNoCutout/NoCutoutOverlay.apk
/product/overlay/FontNotoSerifSource/FontNotoSerifSourceOverlay.apk
/product/overlay/NavigationBarMode3Button/NavigationBarMode3ButtonOverlay.apk
/product/overlay/NavigationBarModeGesturalExtraWideBack/NavigationBarModeGesturalOverlayExtraWideBack.apk
/product/overlay/NavigationBarModeGesturalNarrowBack/NavigationBarModeGesturalOverlayNarrowBack.apk
/product/overlay/NavigationBarModeGesturalWideBack/NavigationBarModeGesturalOverlayWideBack.apk
/product/overlay/OneHandedModeGestural/OneHandedModeGesturalOverlay.apk
/product/overlay/BuiltInPrintService__auto_generated_rro_product.apk
/product/overlay/NfcNci__auto_generated_rro_product.apk
/product/overlay/Traceur__auto_generated_rro_product.apk
/product/overlay/SafetyRegulatoryInfo__auto_generated_rro_product.apk
/product/overlay/ManagedProvisioningPixelOverlay.apk
/product/overlay/SettingsOverlayGLU0G.apk
/product/overlay/PixelSetupWizardOverlay.apk
/product/overlay/PixelSetupWizardOverlay2019.apk
/product/overlay/PixelSetupWizard__auto_generated_rro_product.apk
/product/overlay/SimAppDialog__auto_generated_rro_product.apk
/system_ext/app/EmergencyInfoGoogleNoUi/EmergencyInfoGoogleNoUi.apk
/system_ext/priv-app/EuiccSupportPixel/EuiccSupportPixel.apk
/system_ext/priv-app/EuiccSupportPixelPermissions/EuiccSupportPixelPermissions.apk
/system_ext/priv-app/GoogleFeedback/GoogleFeedback.apk
/system_ext/priv-app/LLKAgent/LLKAgent.apk
/system_ext/priv-app/MyVerizonServices/MyVerizonServices.apk
/system_ext/priv-app/OBDM_Permissions/OBDM_Permissions.apk
/system_ext/priv-app/obdm_stub/obdm_stub.apk
/system_ext/priv-app/PixelNfc/PixelNfc.apk
/system_ext/priv-app/PixelSetupWizard/PixelSetupWizard.apk
/system_ext/priv-app/QuickAccessWallet/QuickAccessWallet.apk
/system_ext/priv-app/ShannonRcs/ShannonRcs.apk
/system_ext/priv-app/StorageManagerGoogle/StorageManagerGoogle.apk
/system_ext/priv-app/UwbService/UwbService.apk
/system_ext/priv-app/WallpaperPickerGoogleRelease/WallpaperPickerGoogleRelease.apk
/vendor/overlay/NfcNci__auto_generated_rro_vendor.apk
/vendor/overlay/Traceur__auto_generated_rro_vendor.apk