I just started going through my Reading (Friends) list and there's one community awesomeers that I see posts regularly - but it's posts that you reply to. And I joined weekendwritingmarathon at some point too, which is a writing challenge/goal thing. fancake is a fic rec comm.

I also read a tip to check out the https://www.dreamwidth.org/latest page - it literally lists every (public) post that has just been posted on DW, so you can get an idea of what comms and also journals are active/updating.

Oh and little_details came to Dreamwidth, which I definitely missed from LJ.