Who are the three most innovative and influential directors in film history?

Three of the most innovative and influential directors in film history are Alfred Hitchcock, known as the master of suspense for his groundbreaking techniques in thrillers; Orson Welles, who revolutionized narrative storytelling and cinematography with "Citizen Kane"; and Akira Kurosawa, who profoundly impacted action and storytelling in cinema with films like "Seven Samurai," influencing countless filmmakers worldwide. Each of these directors brought unique visions and techniques that shaped the evolution of filmmaking.