I noticed that some instances put a registration wall behind their communities. If you are registered in instance A, you can search for a specific community in instance B but cannot see the full list of communities there. Is there a workaround (besides asking someone from B to give a list of the instance)?
Mostly https://lemmynsfw.com There are some niche instances I saw thrown around but if you have a specific kink you have to look for yourself using the search feature. If you search for your kink and a community exists about it, it should show up.