On version 0.19 you can block instances so that you don’t see any posts from that instance, instead of having to block communities one by one, you still see comments from users of that instance in other posts so it isn’t completely blocking the instance.
LemmyNSFW (nothing against it, but I’m not here for that)
Hexbear
These are the only two
same but + lemmygrad and threads
My instance already blocks those, otherwise I’d add those as well
nice