Does Bill Duke or Robert J. Flaherty have more credits for documentary films?
Bill Duke: William Henry "Bill" Duke, Jr. (born February 26, 1943) is an American actor and film director. Robert J. Flaherty:  The film made his reputation and nothing in his later life fully equaled its success, although he continued the development of this new genre of narrative documentary, e.g. with "Moana" (1926), set in the South Seas, and "Man of Aran" (1934), filmed in Ireland's Aran Islands.
i don't know