NFL Connections #47, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
QB busts drafted before 2010
JaMarcus Russell, Ryan Leaf, Akili Smith, Tim Couch
QB busts drafted since 2010
Johnny Manziel, Zach Wilson, Trey Lance, Mitchell Trubisky
Wide receiver busts
Charles Rogers, Justin Blackmon, Laquon Treadwell, Troy Williamson
Offensive line busts
Tony Mandarich, Greg Robinson, Robert Gallery, Luke Joeckel