I'll list some players here that I think could have real star potential, even if they also have a low floor or bust potential. If I were the Jazz, these are the guys I'd want to draft.
James Wiseman: could be prime Deandre Jordan, but needs good coaching and a PG to set him up
Anthony Edwards: He could be great, or he could be Shabazz Muhammad. It's hard to tell.
Killian Hayes: could be like D'Angelo Russell with better driving skills, but needs to become a better shot maker to open up his game
Obi Toppin: could be the PF version of Karl Anthony Towns, just a force offensively
Tyrese Haliburton: could be the next SGA
Isaac Okoro: multi-positional defender who slashes like Corey Magette
Devin Vassell: could score like Allan Houston and defend like Rip Hamilton
RJ Hampton: could be like 80% of John Wall, but needs to learn how to lead a team and it's not clear that he'll get there
Patrick Williams: could be an All Star wing like Jimmy Butler
Aleksej Pokusevski: could be like Keith Van Horn with a better handle and passing, but needs 20+ lbs.
Tyrese Maxey: Could be a slightly more athletic Coby White if he shoots consistently
Aaron Nesmith: Could be Buddy Hield with a touch more driving ability
Jaden McDaniels: Has the raw talent to be like 80% of Paul George, but has a ton of work to do across the board; a middling scenario for him could be something like Kelly Oubre. He could also bust.
Leandro Bolmaro: Could be Gordon Hayward-meets-Ricky Rubio, but needs to fill out his body and settle on a shooting motion to make it consistent.
Paul Reed: Could be like Josh Smith with more IQ and playmaking, but needs to fix his shot.
Corey Kispert: He's pretty much Joe Harris already, but he could be more than that. He might get drafted higher than you think.