Roy Williams
Gary Williams
Jim Boeheim
Lon Kruger
Clem Haskins
Mark Gottfried
Anthony Grant
Jerry Tarkanian
Mick Cronin
Andy Kennedy
Greg McDermott
I think the difference in that list is all of them had college coaching experience prior to going to their alma mater.
Roy Williams - Kansas HC
Gary Williams - BS and Ohio State HC
Jim Boeheim - Syracuse assistant
Lon Kruger - KSU assistant and HC at TPA
Clem Haskins - WKU assistant
Mark Gottfried - UCLA assistant and Murray State HC
Anthony Grant - Alabama HC
Jerry Tarkanian - UNLV head coach
Mick Cronin - UC and UL assistant, Murray State HC
Andy Kennedy - UAB and UC assistant, Ole Miss head coach
Greg McDermott - Wayne State and NDSU head coach
The ones that seem to bomb at the highest percentage are the ones with zero college coaching experience:
Chris Mullin
Clyde Drexler
Patrick Ewing
Sidney Lowe
Eddie Jordan
Mike Woodson (TBD)
Of course there are some anomalies there, and some just don't work out for whatever reason, but overall, picking a guy with no college experience because he was a good player for you generally doesn't work out.