Which film directors have the most consistent visual style?

Andrew Sarris, in his 1963 essay “The Auteur Theory and the Perils of Pauline” reflected on the emerging idea of a film auteur like this:After a given number of films, a pattern is established, and we can speak of the Rays, of Ophuls, Renoir, Mizoguchi, Hitchcock, Chaplin, Ford, Welles, Dreyer, Rossellini, Murnau, Griffith, Sternberg, Eisenstein, Stroheim, Bunuel, Bresson, Hawks, Lang, Flaherty, Vigo, as we speak of artists and authors in other media.Thirteen years later, Hitchcock put it more pithily:Self-plagiarism is style.Both were saying the same thing from opposite ends of the room. Sarris saw the pattern across a director’s films as what earns them the title auteur. Hitchcock saw the same pattern as a method, chosen on purpose. Either way, the claim is that a real director leaves a visible mark across the films they make. I wanted to see whether that was actually true.So I took 2,970 live-action features, directed between them by 190 different people, and for each director, I…