Needs and a gap between Hunter and everyone else, for Barron. There are multiple teams in the top 10 that need help in the secondary but have more pressing needs. The Giants, for example, need help in the secondary but QB and OL are higher priority. Jacksonville also needs secondary help and my non-expert guess is they're hoping Hunter falls to them...but he's probably gone before 5. After that it's the 49ers, Steelers, Packers, Vikings, Lions...and all but the 49ers pick in the 20s. Most scouts grade Barron below Will Johnson. That logically puts him in the 20s.
For Shedeur some of it has to be that he hasn't exactly shown himself to be a leader on the field, and has said some things that are puzzling for someone who has access to PR specialists and has some exposure to what bad PR can do to a player. A buddy of mine who played in the NFL said early in the season that he's a 3rd-round talent with a 1st-round mouth and name.