Chris Chetti was working indies, and I believe sometimes still does. He used to work mainly with MCW before their unfortunate closure. Not a bad talent....
Joel Gertner & Sign Guy Dudley are two different people (just to point that out incase you meant them as one). Joel I have no clue about,while Sign Guy was working indies - and I have no idea what he's currently up to either....
Big Sal last worked a few shows in GA, but since then I haven't heard much, I have been wondering about him myself. I miss the "You fat fuck" chants
Axl Rotten sometimes works indies, and I believe worked an IWA show a bit back with Ian. I believe he stays fairly active on the indy scene....
Ian Rotten, like someone mentioned, runs IWA Mid-South, and wrestles on all of the shows (just about) as well. I think their SS16/Ted Petty show is soon.
John Kronus was working mainly in NJ. You might want to search for The FBI Cassy Strayter - she's a female valet who manages/managed him, and I think they might have been involved. Kronus was
Jack Victory still works indies like 3PW, etc.. and was supposed to be heading up Zero One USA / World One wrestling - but I assume that they aren't doing anything, since their site hasn't been updated since Jack cancelled their FL tour.
Mustafa I have no idea about.
Blue Meanie, as someone mentioned, runs 3PW with Jasmine.
Steve Corino works mainly overseas in Japan, Europe, etc.. but sometimes works here in the US with Dory Funk Jr.'s BANG! "promotion" and others....
"Pitbull 1" Gary Wolfe is still working with 3PW, and he was their former Champion. Thankfully, "Pitbull 2" Anthony Durante died (I believe last year) of a drug overdose. I say thankfully because his children definitely deserved a whole lot better than that