My Cs big board top 5 would be
Doncic, super redundant with this roster but BPA and BS could make it work. This would be a tough pick given the Cs need at big and the player right behind him. I suspect we might see another trade down situation.
Ayton, if be can adapt to the Cs defense he could be really special. He has a higher ceiling then Doncic but also a much lower floor.
Jackson Jr, not the sexy pick but he could be an amazing understudy to Al. He has true DPOY potential while still providing spacing to play 5 out offense and the ability to attack a close out.
Bamba, he is a bit of a risky pick given his lack of clear offensive fit but I have faith the Cs could figure him out and develop him into an amazing anchor for years.
Bagely, he would be a project on D but he is actually taller and longer then Al and is an elite athlete.