KBD, Hutchison and Jerome Robinson would each give the Jazz a legitimate scoring option at the 4, 3 and 2, respectively. They have to be appealing, and one or two of them should be available at #21.
Kevin Huerter looks to be the best floor spacer and pure shooter with enough size at the wing and a quick enough release to get looks off--e.g., Kyle Korver if not Klay Thompson. That has to be appealing as well. He can also create off the dribble and should be passable on defense.
Anfernee Simons and Josh Okogie would be developmental prospects. They have a nice combination of athleticism and potential, but it's not clear to me that their upside is so great that it justifies the risk and the wait to develop them--especially when there are so many other quality prospects on the board. A player who is already 21 can step right in to the same development arc and timeframe as Mitchell, Exum and Gobert (to a lesser extent). To me, this would make them appealing as very late 1st-round or early 2nd-round picks.
Elie Okobo and Khyri Thomas both have potential as high-level combo-guards, but I'm not seeing enough star potential to set them apart from the others right now.
I don't know what to think about Dzanan Musa. He looks like a liability on defense to me, and I wonder about his ability to hold up against elite, physical defense. However, if he's really more awesome than everyone else, I guess you take him.
This is a very strong draft for wings when you consider that Musa, Huerter, Hutchison, Evans, Frazier, J. Robinson and KBD could all be available after #15.