Who is it pretty well known by?
I hadn't heard anything not clean about Hoiberg until this report which appears false.
His Iowa State teams seemed sketchy. Some of this is that in the pre-portal world, people always were skeptical of transfers, much less teams full of transfers. Some of them did have issues and other players. . . it just seemed off.
Royce White - Transferred to Iowa State and suddenly had zero issues there.
Korie Luscious - Had major issues at Michigan State including being suspended for large chunks of time.
Will Clyburn - I don't really think he got into any trouble at Utah before going to Iowa State. It is a little unusual for a player to transfer, sit out a year and then finish their career at another school if there is nothing prompting the change.
Chris Allen - Essentially kicked off Michigan State team, found a home at Iowa State.
Jameel McKay - Left Marquette for academic issues, went JuCo, and finished career at Iowa State.
Hallice Cooke - Went to Oregon State, Iowa, and Nevada.
Deonte Burden - Quit the Marquette team after a few games and then transferred to Iowa State.
He coached at Iowa State pre-portal and was the coach for 5 seasons and there were 15 transfers/JuCo recruits over that time many of which had a checkered past.
His time at Iowa State was certainly unique. There isn't proof that cheating was involved but the skepticism of that program was well-known by pretty much everyone.