This is tough. If the draft went this way I have a feeling it would be KBD, Simons or DiVincenzo (outside chance of one of the others). The Jazz have constantly mentioned upside in this draft so my first gut feeling here was Simons. But Tony Jones said that he doesn't think Simons is one of the Jazz preferred choices at 21. KBD would be a safe pick and fill a possible hole but he's 22 and may lack upside.
I'm gonna say DiVincenzo. Idk though. Who knows what DL has planned. He's good at hiding his intentions.