I'm not aware of an artist called KingCheetah, but I'm sad to hear he died nonetheless. That he had a cue of outstanding overdue commissions which would never see completion, and customers likely never to be refunded, is just salt in the wound.

His name was Shon Howell and he easily switched between human/anthro content in his art. He wasn't a spring chicken and liver cancer took him 5 years ago, like it took my dad 4 decades prior. By all accounts he was a nice guy, even prolific but he had no business accepting money for his work.