Took my time to make a list.
Tier 1 (4-10 range)1.
Bol Bol: Star potential, unique set of skills. He's so ridiculously skilled for a man that long, that he's worth the wait and risk of recovering from his injury. Can be special. Would love to see him get healthy and succeed in the NBA.
2.
Bruno Fernando: Great rebounder, has size and fairly athletic and a good free throw shooter. I expect him to be wild at the beginning of his career, but he can grow into an above average starter level player like Capela. Has a big motor.
Tier 2 (11-20 range)3.
Daniel Gafford: Seems very solid. He's a rim runner like the Zellers. Starter potential, very solid. In comparison to Tyler Zeller he's more athletic, which enables him to finish strong and protect the rim. I like him (maybe too much
).
4.
Mfiondu Kabengele: Indeed more a power forward. He can be a defensive answer to all the long powerful wings. A bit like Siakam, but it's really dependent on how his 3-point-shot translates to NBA-range if he can become a high-level role player.
5.
Goga Bitadze: Hard to evaluate. He's highly valued in Europe, but he'll need time to adjust to the speed of the NBA. Maybe he'll develop into a two-way center like Nurkic. His slow feet or his temper could make him a bust. High risk, high reward.
Tier 3 (21-30 range)6.
Jontay Porter: Very unfortunate to tear his ACL twice. However there's demand for skilled bigs, who can stretch the floor. There can still be a future for him in the NBA as his game isn't based on athletism, but on skill and IQ. He looks like a tweener though.
7.
Charles Bassey: Some team might want to invest in him. He shows flashes of being more than a dunker and rebounder. He has the body and motivation to make it in the league and is only 18. Who knows how far his potential reaches?
Tier 4 (31-45 range)8.
Nicolas Claxton: Very interesting player. He makes a lot of mistakes and can look truly awful, but at the same time he's willing and able to do a lot of stuff on the court. If everything clicks he could become a complete player. Possible sleeper.
9.
Neemias Queta: Great rim protector and strong in the post. He's a good passer as well. I'm not sure his anticipation and agility is up to par. We've seen a lot of this type of big men fail.
10.
Jaxson Hayes: In most mock drafts he goes way higher, but I see a Marquese Chriss type of player. I don't see a position for him. Not big and smart enough to be a center and not skilled enough to be a power forward.
11.
Naz Reid: Looks in poor condition. His fundamentals aren't there, so I'd be surprised if he wouldn't need time in the G-league to become NBA-ready. He's got more upside than most big men deep in the draft.
Tier 5 (46-undrafted)12.
Tacko Fall: Freak. Someone will probably draft him, but he's too slow to be able to ever play rotation minutes.
13.
Moses Brown: Super raw. Big body, but it will take years to make him learn to play.
14.
Christ Koumadje: Not impressive in college, no reason to believe he has unproven potential.
15.
Sagaba Konate: Not long enough and not much of an athlete.