Giant generic #Instances:
octodon.social
mastodon.social
social.tchncs.de
mastodon.xyz
mastodon.cloud
mastodon.blue
mastodon.host

Instances I love:
oulipo.social
dolphin.town
tenforward.social
mastodon.technology
hackers.town
bookwitty.social
aleph.land (mostly the name)

Instances which confuse me:
rich.gop
capitalism.party
marxism.party
noagendasocial.com

Then there are: spam, trash, and foreign language instances; small and tiny ones; the entire prior #GNUsocial/#OStatus federation.