Of those 59, 46 were of major league players. And of those 46, every single player represented was still on the Cubs 40 man roster at the end of the 2016 season. After several years of constant roster turnover, things have stabilized. Winning 103 games in the regular season tends to do that. And the deals the Cubs did make during the season cost them prospects, not major leaguers. That's another positive sign.
Of the players, the one that had the most cards was Jake Arrieta. He showed up on eight cards...the base, three league leader cards, Award Winners, Then and Now, Now and Then, and Cubs Combos.
Take a look at a tile of all 58 cards: