I don't think Simmons or Ingram is some kind of franchise savior. Simmons is a great fit as a 4 in the modern NBA though because he can guard inside and on the perimeter, rebound, handle the ball like a guard, and score inside. Even if he never develops a reliable jumper, he is still going to be a very valuable player. I see him as a better version of Draymond Green who can create offense on his own much better than Green.
Decent post-up game, which has room for improvement
Good mobility for this size
Solid post defender
Touch around the rim
Free throw shooter
Aggressiveness on the glass
Turns the ball over too often for a big
Decision-making in the post
Prone to foul trouble
Summary: Ezeli will be drafted solely due to his size alone. He isn't a stiff by any means inside, but does not possess a ton of skill, which projects him as a backup at the next level. Ezeli battled injury early in his senior season which sort of stunted his growth some, but because NBA teams are always in need of some size inside, he will get drafted possibly as high as late in the first round. More than likely, he'll fall into the second round.
Player Comparison: Brendan Haywood. Ezeli isn't an especially skilled or athletic big man, but knows how to use his big body in the paint and make the most out of the opportunities he is given. Haywood is a similar player who has made a living in the NBA due to his size and strength; not because he is an overly talented basketball player.