Aa was not meant to be "christian only" which is actually great.
It brings many people a step closer to being open to Christianity and God - and it definitely can restore dignity to a human and help restore relationships, jobs and life quality.
My room mate was atheist all his life - and he is now an agnostic. Granted he wants a God who will allow him to live in sin - BUT he at least believes in a god now!
That is a huge step and he has gone from an alcoholic about to loose his liver - to recovering and living 12 years beyond what doctors had predicted.
But if you prefer a "christian aa" there is "Celebrate Recovery" by Rick warren (and another co author). I have been through this program to try and deal with my abandonment issues and it helped to restore my relationship to my mom somewhat.
right now my roomie is sponsoring a young man who is trying to get his life back on track to be a good daddy to his kids. And two days ago he relapsed. Please pray for him. This quarantine is really getting to everyone - there is no work to distract from the "thirst".