Something to be aware of is that lemmy.world defederates the two major communist Lemmy instances (hexbear and lemmygrad) - preemptively, by the way - so if you have any interest in seeing that, you will need to look for another instance. Lemmy.world is generally considered the main liberal/neoliberal instance. Now that Lemmy allows each user to block entire instances, I feel that the idea of some instances deciding for their users what they should or should not be allowed to read is ridiculous.

I picked my instance, lemmy.zip, because it's one of the few major one that only rarely defederates other instances, usually only for illegal content or spam reasons. They took a more reasonable approach to the communist instances I mentioned, by blocking them by default since some people consider them controversial, but using a user-switchable block, meaning that you can very easily unblock and see content from those instances.