In all fairness, Trump is a sufficiently arrogant guy that I might be willing to entertain the thought that he just dislikes most people, in general, and while he doesn't go out of his way to be particularly "not racist", a lot of what gets attributed to racism with him could probably be chalked up to general disdain for humanity and he'd say and do the same stuff about working class white people if he didn't think they were voting for him.
That is, I think the guy is stuck at the juncture of cognitive dissonance where he simultaneously believes he is superior to everyone, in general, while also being so quick to anger when challenged due to a pretty bad inferiority complex.
Just makes him a huge asshole rather than explicitly racist.