I'm in https://joinfocusx.com and https://smallbets.co
Small bets has about 3k members, so can be a lot to keep up with.
I've found smaller community/group (10-100) keeps me active and accountable.
Something I've been shocked at, (I'm in...6 paid communities now) is that the communities often end up discussing very similar things (e.g. Boilerplates), despite being focused on very different purposes.