Churchill is similar and possibly more familiar to the English-speaking public: presented as a lion against Hitler, but don’t dig too much towards what he did with Irish republicans or around India’s independence.
I don’t think FDR was that much different if you read what he privately wrote about Jewish immigrants to the US in the 1940s or the internment camps of Japanese-Americans.
All three are the modern keystones of human-rights-defending countries, but the second best-known thing about them is how much effort they put into planning openly racist policies, up to genocides. You can read Hannah Arendt and re-read after accounts on what happened during the Battle of Algiers, the Bengal Famine, or Manzanar, and it hits differently the second time.