Gane would pick him apart and Ngannou is just too physically overwhelming, but I wouldn’t rule him out against anybody else.
I would have him as an underdog against all the other top guys, but he always has a puncher’s chance.
Volkov and Blaydes can get caught and KO’d, neither is a particularly dominant fighter.
Stipe has far more skill, but we don’t know if he’s washed. This is a sport where your career can be finished overnight.
Jones and Tuivasa will never fight, so that’s a moot point.
Aspinall is far more skilled, but it’s not like he’s physically or skillfully overwhelming against Tai IMO.