I think at least for cubans, they hate socialism so much that they naturally lean the other extreme - which is right wing. not sure about the mexicans tho
Cubans are just a special basket case.
I think for other groups tho the history of White racism and supremacy was way more prevalent than it seems. I think the Catholicism kinda made things more uniform and not as harsh looking as it was here where even Catholics were under pressure from Protestants. But even then, Latin America was never that much better than we are. So they coming here having already known at least some form or another of white elitism.