NFL Connections #20, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Philadelphia Eagles greats
Brian Dawkins, Donovan McNabb, Jason Kelce, Brian Westbrook
New York Giants greats
Lawrence Taylor, Michael Strahan, Eli Manning, Phil Simms
Detroit Lions greats
Barry Sanders, Calvin Johnson, Matthew Stafford, Ndamukong Suh
Tampa Bay Buccaneers greats
Derrick Brooks, Warren Sapp, Mike Alstott, John Lynch