I know @pete ...but I didn't when we fediverse met.
There have been a few others that have come and gone over the years, but mostly just twitter refugees that went back when they figured out the fail whale (which I think was them moving to #Java).
@edythemighty and @marxistvegan are probably the two I spent the most time talking to here, but again, neither of them did I know IRL before fediverse. I still keep up with Edy, but he's just not in the fediverse.