NFL Connections #34, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Played at Penn State
Saquon Barkley, Franco Harris, Jack Ham, Micah Parsons
Played at Florida State
Deion Sanders, Derrick Brooks, Jameis Winston, Warrick Dunn
Played at Tennessee
Peyton Manning, Reggie White, Eric Berry, Jason Witten
Played at Pitt
Tony Dorsett, Larry Fitzgerald, Mike Ditka, Aaron Donald