My impression is that Wilson was an active racist. The Federal Government was purged of black civil servants during his 8 years. He had "Birth of a Nation", in which the KKK was celebrated , screened in the White House.
LBJ seems to have been a racist, but saw value in buying blacks' votes through the appearance of compassion (whether he understood the degree to which social programs would cripple humans' spirits, I don't know).
FDR seems to have bowed to a key element in being elected and re-elected, the Democratic Solid South; whether FDR was more racist than the superiority complex many whites of the era shared, I do not know.