Regarding portal talent, Bidunga is really good both ways. Players of that caliber won't appear in the portal often, and whoever lands him has a monster piece to build a contender around. The rest are Tier 2 (and below) players who have obvious limitations. For example, Blackwell (Tier 2) can score but has suspect defensive metrics; Miles Byrd (Tier 3) can defend but can't score. There are probably only about five players in Tier 2, and they're all considerably below Bidunga in overall production.
Regarding high school talent, many NBA talent evaluators think this is one of the weakest classes in recent memory. Scouting grades also seem to agree since Stokes isn't anywhere near the prospect that Flagg or Dybantsa were, for example, and there's a considerable drop off descending down the top ten.
The apparent bottleneck of talent next year implies that teams should be overpaying the true studs -- which are in low supply -- while saving money everywhere else. Bidunga might even be able to name his price, because there's no way to create a better lineup than the one that begins with the only 10+ RAPM portal guy. One team would basically need to land everyone in Tier 2 (won't happen) to build the kine of roster you could easily make with Bidunga.