Joe Wieskamp is the one I've been higher on than anyone else since his Freshman year. He's getting more hype now that he had a good combine. He's this year's Kuzma-y type pick.
Josh Christopher and Jaden Springer are two dudes who I'm high on who have been mocked as dropping. If they are somehow are there at 30, I would take either of them over basically anyone who has a chance to be available.
Then guys like Thor/Murphy/Roko are dudes I'm also high on who could be in the Jazz's range if they get lucky.
I'm super high on Moses Moody, but he's way out of the Jazz's range. He's the one guy I would advocate giving up stuff to move up for if he somehow slips out of the lottery, but I don't think it's really feasible. To me Moody is a top 5 guy who I've seen going as late as 15 in some mocks, but I assume he's going to go lottery near guaranteed.
Also Yves Pons would be a deep sleeper for me. Not every mock has him being drafted, but he's an elite small ball 5 type defender. He's probably the only legitimate 1-5 defender in the draft and he's an absolute freak athlete with insane strength and mobility.