Jon Beason
Beason played for the Panthers from 2007-13 and then got traded to the Giants in 2013. He stuck around in the NFL until 2015, and his performance was remarkable enough to land himself a spot on this list. Although some might disagree, Beason was considered to be one of the best linebackers on the field from 2009-13, his commanding presence uplifted lines as well. He worked best with other people, which was ideal for him since he was a linebacker.
Spencer Paysinger
Paysinger shined as a newcomer to the NY Giants when he hit the scene in 2011. By 2014, he had been injured twice and he never really showed the same confidence on the line. After that, he moved to the Dolphins, and then to the Jets, finally ending his career with the Panthers in 2017. Paysinger stopped showing up after 2014, but his first years were so remarkably good that it was undeniable the effect he had on the game.