NFL Connections #54, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Won NFL MVP 3+ times
Peyton Manning, Aaron Rodgers, Brett Favre, Jim Brown
Running backs who won MVP
Shaun Alexander, LaDainian Tomlinson, Adrian Peterson, Marshall Faulk
MVP winners of the 1980s
Joe Montana, Dan Marino, Lawrence Taylor, Marcus Allen
MVP quarterbacks of the 2000s
Rich Gannon, Steve McNair, Kurt Warner, Tom Brady