It’s easier for me to separate out the top 15 offense and defense. I don’t know how to “compare” an offensive player to a defensive player for the purposes of ranking them.
My top 15 Bills on offense (that I saw play) are (in no particular order): Josh, Kelly, Ferguson, OJ, Thurman, Cribbs, Shady, Reed, Lofton, Moulds, Diggs, Hull, Ritcher, Ruben Brown, Joe DeLamielleure. So I’ve got 3 QBs, 4 RBs, 4 WRs, and 4 OL.
Top 15 defense (that I saw play) are (also in no particular order): Bruce, Biscuit, Talley, Hansen, Smerlas, Haslett, Nelson, Hyde, Poyer, Ted Washington, Odomes, Paup, Kyle Williams, Milano, Winfield. That’s 6 DL (incl. Paup), 5 LB, and 4 DB.