I don't see how any of them fit the Huggins model.
Plus, if those guys couldn't win at Tennessee, Miami or aTm, why would they win here? And why would Mike Riley leave his version of K-State to start over?
Coker went 60-15 at Miami, won a national championship and finished in the top 5 three times in six years. He won 12, 12, 11, 9, 9 and 7. If you want to say the Canes got worse every year he was there, that's fair, but he deserves at least some of the credit for The U's success and it's worth noting that the Canes have been in decline ever since he left.
Fulmer went 152-52 at Tennessee and also won a national championship. He's had more than a handful of top 10's and has won 10 or more games nine times in 16 years. Like Coker, Fulmer's teams got worse toward the end, but I would argue that the SEC also got significantly better. Meyer and Saban became king, and LSU has held their own since Miles has been there, too.
They've won plenty.
The other guys I've mentioned—Riley, Erickson and Hill—would all be compelling hires if "forced out" of their current gigs. I'm not suggesting K-State would target them and I have no clue if those guys would even be interested. But those types of guys would bring instant credibility and would have—although not nearly to the same extent—a Huggins-like impact.