Both of them were his friends, actually- especially Misha.
you said he didnt include any soviet.he included alekhine and chigorin too..he also included capablanca in his list.
he said about capa:
He had the totally undeserved reputation of being the greatest living endgame player. His trick was to keep his openings simple and then play with such brilliance that it was decided in the middle game before reaching the ending -- even though his opponent didn't always know it. His almost complete lack of book knowledge forced him to push harder to squeeze the utmost out of every position.
and he gave an example of his game with menchik.
You should not take Fischer's evaluations about the greatest players for real. He did not include in them any Soviet, or Jewish players- so Botvinnik, or Lasker, or... were not in his list.
Oh, and Fisher was actually envying anyone who had displayed a greater authority than his. Capa is included, of course.
Though Fischer included Spassky, and Tal. Both soviets, if I recall.