Modlog, which includes a site ban—something only admins can do.
The community bans also include communities that aren’t moderated by any instance admins, and some that are only moderated by a single person who likely isn’t aware of actions taken under their community’s name.
Man… I really wish Kbin was the one who took off instead. I know lots of people turned off by the fact that Lemmy has lots of suspicious folks like this.