NFL Connections #30, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
New England Patriots greats
Tom Brady, Ty Law, Richard Seymour, Willie McGinest
Buffalo Bills greats
Jim Kelly, Thurman Thomas, Bruce Smith, Andre Reed
Miami Dolphins greats
Dan Marino, Jason Taylor, Zach Thomas, Larry Csonka
New York Jets greats
Joe Namath, Curtis Martin, Darrelle Revis, Joe Klecko