Icons - players/coaches that others basically identify with a club, considered to be among the best players on their positions, players like Del Piero, Buffon, Nedved, Platini, Sivori, Chiellini, Scirea; Coaches: Lippi, Trappatoni.
Legends - their impact was significant, often protagonists during their time and generally liked by the fans: Baggio, Dybala, Pirlo, Vidal, Trezeguet, Ferrara, Montero, Barzagli, Zidane, Davids, Allegri...
Notable players/coaches - remained a long time with a club, not the most talented around but made important contribution over the years or talented but their time here was too short to get into upper category: Pessoto, Tacchinardi, Toricelli, Alex Sandro, Bonucci, Marchisio, Iuliano, Di Livio, Deschamps, CR7, Zambrotta, Tudor, Tevez, Morata, Inzaghi, Vycpalek....
Rookies: All others
Just an example.
And ofc 5th category Abominations - talentless hacks: Mckennie, Weah...