Here's a very simple alphabetical squad list of top 3 appearances:
Started the game(came on as sub) First, second, third place
Abidal 0(0) 0,0,0
Adriano 7(1) 1,0,1
Alba 8(2) 1,0,1
Alexis 8(2) 0,1,0
Alves 9(0) 0,0,0
Bartra 1(0) 0,0,0
Busquets 11(1) 0,1,0
Cuenca 0(0) 0,0,0
Fabregas 10(1) 1,1,1
Iniesta 6(3) 1,1,0
J. D. Santos 0(0) 0,0,0
Mascherano 10(1) 0,0,1
Messi 12(1) 6,2,1
Montoya 2(2) 0,0,0
Pedro 10(3) 0,0,2
Pinto 0(0) 0,0,0
Pique 6(1) 0,1,0
Puyol 4(0) 0,0,0
S. Roberto 0(0) 0,0,0
Song 4(3) 0,1,0
Tello 6(5) 0,2,0
Thiago 2(1) 1,0,0
Valdes 13(0) 0,3,0
Villa 2(7) 0,0,0
Xavi 10(3) 2,0,6
It's not exactly good looking, but I suppose it gets the job done.
The gulf from Messi and Xavi down to number three is extreme, but from then on it's fairly even. The biggest eyesore must be our defense, which is clearly carried by Adriano and Alba who're both on two top 3 appearances, but that's hardly surprising, the way we ship goals this season. Alves is yet to feature, even though he has 9 starts, and Busi has only 1 silver medal to his name.