So the premise here is a Bleacher Report article titled: 8 Underrated NFL Players Who Can Swing Division Races in 2020. To pull this off you need to set at least some set of loose parameters to identify underrated players that fit the definition of potentially “swinging a division”. They do that in this manner:
First, an underrated player by our definition is someone who hasn’t made a Pro Bowl or All-Pro team. Yet, said player must be capable of creating an impact large enough to potentially swing a division race.