All three are great picks.
J.C. was sadly taken too early from us, but his brain was donated to Boston University for research. As well he was one of the original people of CZW/IWA Mid-South. His feuds with Zandig, Gage, Pondo, and a few others were always great to watch and he was the first ever CZW Ultraviolent Underground Championship.
Wifebeater was everything you wanted in Stone Cold and more. A beer drinking, tough son of a bitch, that knew how to brawl with the best of them and knew how to out wrestle at times. He was the first person to introduce a weedwhacker into a Deathmatch, which has gone to become a stable among CZW at times. He also helped form H8 Club, which include Justice Pain (RIP) and Nick f'n Gage, and this/that stable would go on and be well known in the deathmatch fandom. Also, won the first-ever Tournament of Death of CZW defeating who else but Mondo, his arch-rival to some degree.
Toby Klein is a tough bastard for sure. The name was dubbed Mr. insane because if there was a insane spot he pretty much did it. He formed the tag team of TCB, Tough Crazy Bastards, with Necro Butcher, another legend, and their rivalry with H8 was known and great among the days of CZW. He would also win five, i think, Tournaments of Death some of which were brutal as fuck. Deranged inducting him makes sense since he was trained by him.
Post Edit: I just realized that bitch replied, and yeah, he will never in no Deathmatch Hall of Fame nor should he. Man barely has done shit compared to those three and others. So fuck Matt Cordona