re: Juniors leaving early

Delpit - consesus 1st round pick. He'll go

CEH - Not a day 1 pick, and possibly not a day 2 pick. Still, it's hard to see him having a better year than he is now. Like Waters in basketball, his biggest negatives are lack of size and breakaway speed. He can't improve that by coming back. He should probably go

Jefferson - Doesn't have the exceptional physical traits to be a first round pick (i.e great size and/or exceptional speed). But, can he have a BETTER year without Burrow at QB? Doubtful. He'll go.

Shelvin - Has been good this year. But interior defensive linemen get picked high ONLY if they can rush the QB (see Quinnen Williams). Pure run stuffing DT's don't go in the first round. That's what Shelvin is right now. This was the first year he was actually able to be a factor at LSU. He definitely could improve by coming back.

Chaisson - From a production standpoint he is not a 1st rounder. Remarkable physical traits, but struggles to consistently pressure the QB...which is what the NFL wants out of DE/OLB. Still, some (perhaps many) teams will see the raw physical ability and think they can mold him into the next Danielle Hunter. He'll star at the combine. But remember, this is only his second full season. The enormous preseason hype was unwarranted and overblown, but with those kind of physical traits there is a chance he could develop into a monster and make himself not just a surefire 1st rounder, but a potential top 5 pick. He will be the biggest question mark IMO

Others:

Chusenberry - Center is not a "premium" draft position, but you could maybe argue he is the best Center prospect in the draft. He stock may not be able to get much higher

Phillips - Physically he looks the part of a great ILB, but his production is just so so. Compare with D. White who had BOTH the physical traits AND tremendous football instincts. Phillips could likely improve his stock by staying another year