I'll admit, I never took Jackson seriously since I was under the impression he was another big who couldn't shoot past 3 ft and we don't need or want any of that.
Watching him more, he actually has a decent shot tendency to face up from mid-range. His form looks solid and consistent, something I never found convincing from Kai. Kai has a tendency to act like a wing who thinks he has the ability to shoot off the dribble and fails miserably at it. Isaiah is your old school face-up big who will take the shot from mid-range if he thinks he can shoot over you. On the perimeter, I can envision him being a stand still shooter down the line. Make no mistake, Isaiah doesn't look like he's going to project into your modern big that everybody dreams about. But what he does have is the potential to be your LaMarcus type big who will take the ball from the post or farther out, giving the offense a little bit of structure than modern basketball. Obviously, this is all highly unlikely to happen but IF he does put in the work then that is the type of ceiling I see.
Kai Jones took 27 shots in the mid-range, at 33% FG.
Isaiah took 54 shots in the mid-range, at 35.2% FG. He likes to shoot.
I'll probably bump him up to my Tier 4, which is the same group Kai is currently in but Isaiah will be higher.