1954-1963: The Foreign Directors' Decade

Before New Hollywood would contribute to raise the artistic profile of American cinema over the world, the flag of cinematic excellence was certainly raised by four foreigners... who weren't newcomers in the late 50s, but whose artistic peak was certainly reached during the glorious decade that goes from 1954 to 1963, (they would still make masterpieces after but that's another story).

Considering a series of parameters such as quality over quantity and critical acclaim rather than commercial (without diminishing the latter), which of these four directors owned the 1954-1963 period?

After voting, you might discuss the list here