Mastodon is very different to Lemmy/Kbin - Mastodon is Twitter, not Reddit.
Lemmy/Kbin are very much the “Threadiverse”. They see each others threads and communities, and effectively compete on server speed & interface logic.
Currently, I’m preferring Kbin - the new Fedia.IO instance is nice and fast and federated, so that’s the one I would recommend.
Is it for "Am Not A Lawyer" answers to legal questions?