Film (and television) seems studiously underrepresented given the presence of authors, playwrights, poets, and musicians. Musicals are also absent.

I'd also suggest that cultural impact plays a strong part in Homer's prominence. The American Homer would probably be older rather than more recent (at least by present reckoning).

Francis Ford Coppola / Mario Puzo, The Godfather; Michael Curtiz, Casablanca; Steven Speilberg; Orson Welles, Citizen Kane; Richard Rodgers and Oscar Hammerstein, Oklahoma!, South Pacific, The Sound of Music, etc., might make my list.