I'm a Quinyon Mitchell fan. I know G5 is a harder evaluation, but he's got multiple years of production, good size (6' + 200lbs), made the Freaks list, and Brugler says he has verified 4.3 40 times. I'm worried he won't even be there at 22.
I think Kalen King could sneak into the 1st round too. Obviously a lot there hangs on testing and the postseason games.
Sainristil's a Slot, but that's a good late chance to take. Jaylin Simpson from Auburn is another Day 3 Slot/Safety hybrid I love. He was absolutely fantastic against Georgia this year. I know it was one game, but that was a pretty good one to be everywhere.