I agree with the idea of standardizing on at least enuf community-organization vocabulary so ActivityPubs can interoperate.
But I also agree with the people who want communities to define it themselves.
So that means a fairly minimal set of primitives that any community can use to define themselves and their organizational relationships.
Several of the research findings seem way too prescriptive to me. SIOC, for example.
Valueflows has a pretty minimal set of primitives that allow almost everything to be user-defined. Bonfire extended them a bit based on experience in Moodlenet. @lynnfoster of Valueflows and @mayel of Bonfire are discussing how to make it all even more minimal and should have something to report soonish. I’m pinging them here to suggest that they report in this thread when they are ready.