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.
scamper
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'm trying to think of questions that have a similar vibe. these may be way off (I'm not trans) so take with a grain of salt -
a religious person meets someone in their congregation and asks if they are a convert or were born in.
a person on a date asks their date, a single person, if they are divorced or never married.
I think I would struggle to define the category being asked about in these questions too. It's something about history and expectations.
You might call the category lived experience. Does your gender identity match your lived experience and upbringing, or does it not? Sometimes you see trans people use the phrase 'man of trans experience' or 'woman of trans experience' to highlight that the word trans applies to history and experience. So the question might be, "what is your gender experience?" or "what is the nature of your gender socialization?"
TERFs brazenly use their own slurs, TIF (trans-identified female, aka a trans man) and TIM (trans-identified male, aka a trans woman). They don't care at all about respecting each person's chosen terms, they only care about ideology and enforcing their viewpoint.
I'm very frustrated by the apologists saying, "well, cis people don't necessarily identify with that term and we should respect that". It's not so simple, what term would they like us to use instead? They never offer one. They want the absence of any term, because they want to enforce an ideology where only they are normal. So they can make up any mean words against trans people that they want, but we can't even factually describe them with a neutral term?
She's painful to listen to. Can't string a clear sentence together and laughs constantly. Not inspiring or particularly incisive. Which is a particularly disappointing combo when Biden is the same.