1. Embiid
1.a Wiggins
3. Parker
4. Smart
5. Randle
I think Wiggins and Embiid are tie. Potential is high and skill level is already there.
Jabari is a solid 3rd, and should not drop.
Smart and Randle have lower ceilings than the three, but sure fire NBA starters.
I don't know much about Dante Exum, so I'll hold on judgement.