Ahhh! The innocence of the Pre-Joseph/AYC/Jothar witchhunt days! We used to be able to ask these questions.
I know about 8-10 regular posters. Almost all of them have one commmon denominator, we are landsleit at one level or another. There are a couple more from other places that I have figured out as well, with whom I have not communicated that information. Tried once on a thread where someone gave himself away, and I connected us (in a way that no one else would work it out, my brother in law is his uncle) but the mods didn’t let it through.