Seems like he will probably go 1st round, but you never know. He could still be there - especially if we get pick 33 instead of 35.
It's interesting. Watching the scouting report vid on Nnaji, Bona and Lively, they all have fairly similar strengths and weaknesses. All with good size, good athleticism. Good rim runner, lob threat, rim protector types. All are pretty limited with ball skills, especially in terms of creating anything off the dribble. All are a little bit foul prone and have some issues defending the perimeter. But they're all young enough that they should be able to clean up/improve upon their weaknesses.
I feel like you could actually argue that Nnaji is a better prospect than Lively. They're pretty similar strengths and weaknesses. But Nnaji is clearly built stronger physically - which helps him to better handle big guys on the low block like Embiid, Jokic, etc. Lively has struggled a little bit matching up in the paint vs big/strong centers. And Nnaji is a little bit younger than Lively, too.
But I have Lively ranked just barely ahead, because he's a little lighter on his feet (to better handle the fast, up tempo style of play in the NBA), he's a little bit taller and shows more passing + shooting flashes. Plus, Lively got like double the amount of playing time this season compared to Nnaji so Lively is more proven, more of a sure bet. It's hard to know for sure what you're getting w/ Nnaji, since he only played 9 mins a game.
As for Nnaji vs Bona, really the only edge Bona has is the disparity in playing time (like I explained with Lively vs Nnaji). But Nnaji is clearly bigger (an inch, maybe 2) taller than Bona, Nnaji just plays bigger, stronger, with more force and with more power - Nnaji looks like a monster out there, and it's crazy cause he's only 18 (younger than both Lively and Bona). Honestly, Nnaji and Bona very similar players, similar strengths and weaknesses. But Nnaji is bigger, stronger and about a year and a half younger. That gives him the slight edge, IMO. The cherry on top for Nnaji is that Bona recently had shoulder surgery and is aiming for a return to the court in October. Only advantage for Bona is being a little more proven (more than double the minutes this season) and is a little bit lighter on his feet, quicker getting up and down the floor. So it is close, but I give the slight edge to Bona.
My ranking is:
1. Lively
2. Nnaji
3. Bona