NFL Connections #94, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Big-bodied receivers
Calvin Johnson, Mike Evans, A.J. Green, Brandon Marshall
Speed receivers
Tyreek Hill, DeSean Jackson, Randy Moss, Mike Wallace
Possession receivers
Wes Welker, Julian Edelman, Anquan Boldin, Larry Fitzgerald
Iconic No. 1 receivers
Jerry Rice, Terrell Owens, Marvin Harrison, Steve Smith