I noticed "The Ultimate FOSS Guide for Android" was very out of date and thought I'd try to make a new version with more current suggestions. But after a while I realized most of the time I was just copying off PrivacyGuides.org which has a pretty robust set of FOSS offerings with an unsurprising focus on privacy.
There are still some things it doesn't cover like Android launchers and keyboards, but we could have an additional sidebar post with more a la carte suggestions.
Thoughts? 
It would be good to have some kind of resource about developing a threat model and the impossibility of anonymity as well.
PrivacyGuides does actually have some of that in their knowledge base
Good looking out, I haven’t been to that site in quite awhile.