I think most of the general LGBTQ+ activity is at [email protected], if you’re not already subscribed there.

For transgender-related content specifically, I know these communities:

• [email protected]
• [email protected]
• [email protected]
• [email protected]
• [email protected]
• [email protected], a.k.a. !traa

I’m not as informed about communities for other parts of the rainbow, so maybe someone else can chime in.

Every server just has a cache … there is no profit for the whole network …

I wouldn’t say that caching is no profit. Yesterday there were several times when lemmy.ml was struggling or effectively down for some people, but despite complaints over there I could read lemmy.ml communities just fine through my instance. Caching meant that I was isolated from the service interruption, and the lemmy.ml server was isolated from my contribution to its load.