Steve Schmidt. He has a long history as a conservative strategist which is a huge red flag for me, but I think it would actually make him more palatable to right-wingers. I watch his show ‘The Warning’ and he makes a lot of sense with his positions. He is extremely clear in his criticisms of Trump, but he also doesn’t focus on culture war nonsense. I’m willing to compromise as long as the person can think straight and face reality, which is seemingly an extremely high bar now.
I would probably call them ‘boards’. Communities is too long of a word imo and it makes it sound like the people subscribed all have some kind of shared culture or relationship. That definitely happens in some cases (there are subreddits which have built a community around them) but it’s not universal.