Esto es lo que viene en las gapps
ChromeBookmarksSyncAdapter.apk
GalleryGoogle.apk
GenieWidget.apk
Gmail.apk
GoogleBackupTransport.apk
GoogleCalendarSyncAdapter.apk
GoogleContactsSyncAdapter.apk
GoogleFeedback.apk
GoogleLoginService.apk
GooglePartnerSetup.apk
GoogleQuickSearchBox.apk
GoogleServicesFramework.apk
GoogleTTS.apk
FaceLock.apk
MarketUpdater.apk
MediaUploader.apk
NetworkLocation.apk
OneTimeInitializer.apk
Phonesky.apk
SetupWizard.apk
Talk.apk
VoiceSearch.apk
Entre otras cosas, que no son necesarias para todos
Saludos.