Imo some of the other strongest years in terms of best players are:
1929 (Czibor, Didi, Djalma Santos, Kocsis, Santamaria, Yashin, Zebec)
1942 (Bremner, Eusebio, Facchetti, Mazzola, Zoff)
1944 (Carlos Alberto, Jairzinho, Johnstone, Maier, Netzer, Riva)
1946 (Best, Croy, Dzajic, Figueroa...