NFL Connections #86, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
2010s star QBs
Aaron Rodgers, Tom Brady, Drew Brees, Russell Wilson
2010s star running backs
Adrian Peterson, Marshawn Lynch, LeSean McCoy, Le'Veon Bell
2010s star receivers
Calvin Johnson, Antonio Brown, Julio Jones, DeAndre Hopkins
2010s star defenders
J.J. Watt, Von Miller, Aaron Donald, Khalil Mack