Big name for government backed hacking tools to list them separately on supported devices / OS cause it’s more secure.

com.facebook.system

com.facebook.appmanager

com.facebook.services

You can see them in apps in settings by tapping filter to right of app list and toggling show system apps.

Honorable mention:

com.samsung.android.smartcallprovider

This is a non Facebook fun ones such as one that sends every callers phone # to a company called Hiya which has a nasty privacy policy.

At least with latest Samsung phones if you don’t use adb there are meta / Facebook services that run and cannot be disabled. There is a ton of other bloat and data collecting services too.

Since Google is about to uppend the open source community and lockdown apps to only ones from developers they approve of you may be better sticking with Apple. At least they aren’t an ad company.