Btw, both Mbin and PieFed have “categories” of multiple communities, so that you don’t have to sign up to or explore each community entirely on its own.

Also, you may find it interesting: lemmynsfw, lemm.ee, and sh.itjust.works each have significantly more active monthly users than lemmy.ml. Though lemmy.world does have something like 80% of them on just that one. lemmyverse.net/?order=active_month

Until 0.19.6 comes out of beta and Lemmy.world upgrades to it, it’s actually hard for any other instance besides it to remain up to date with content.