Question: Who has had more positions in the film industry, Walter Lang orMiguel Contreras Torres?

Context articles: Arthur Roberts (editor)
The Last Rebel (film)
Tehuantepec (film)
Miguel Contreras Torres
Juarez and Maximillian
Simón Bolívar (1942 film)
Pancho Villa Returns
Flor Silvestre filmography
Walter Lang
Under the Sky of Spain

Arthur Roberts July 17, 1890 – February 5, 1961), also known as Arthur E. Roberts, was an American film editor who edited over 100 films during his almost 30 year career.
 He began ending towards the end of the silent era of the film industry, his first film being 1927's "The College Hero", directed by Walter Lang.
 His last film was Republic's "Lay That Rifle Down" in 1955, after which he spent a brief period as the editor for the television series, "Lassie", before retiring in 1956.
 During his career he would work with many famous directors, including Frank Capra (on several films, including "The Donovan Affair"), Lowell Sherman (on "The Royal Bed"), William Seiter (on several films, including "Way Back Home"), Edward Cline (on "Cracked Nuts"), George Cukor ("A Bill of Divorcement"), Dorothy Arzner (the first female member of the DGA, on "Christopher Strong"), Anthony Mann ("Strangers in the Night"), George Archainbaud ("Girls of the Big House"), Fritz Lang ("House by the River"),
The Last Rebel (Spanish: "El último rebelde" ) is a 1958 Mexican western film directed and written by Miguel Contreras Torres.
 It stars Carlos Thompson as Joaquin Murrieta, Ariadna Welter and Rodolfo Acosta.
 The film was produced by Hispano Continental Films.
Tehuantepec is a 1954 Mexican historical drama film directed by Miguel Contreras Torres and starring Katy Jurado, Gustavo Rojo and Enrique Rambal.
 In the early twentieth century a railway is constructed across Tehuantepec to try and compete with the Panama Canal which was also under construction.
Miguel Contreras Torres (1899-1981) was a Mexican actor, screenwriter, film producer and director.
Juarez and Maximillian (Spanish:Juárez y Maximiliano) is a 1934 Mexican historical drama film directed by Miguel Contreras Torres and Raphael J. Sevilla.
 The film is set during the French intervention in Mexico during the 1860s, and features the battle between Maximilian I of Mexico and Benito Juárez, a theme used in the later 1939 American film "Juarez".
 It was one of the few major commercial successes for the Mexican film industry in the early sound era, before the beginning of the Golden Age of Mexican cinema.
Simón Bolívar is a 1942 Mexican historical drama film directed by Miguel Contreras Torres and starring Julián Soler, Marina Tamayo and Carlos Orellana.
 It is a biopic of the revolutionary Simón Bolívar who fought to end Spanish rule over much of Latin America.
Pancho Villa Returns is a 1950 film directed by Miguel Contreras Torres and starring Leo Carrillo as the legendary Mexican revolutionary general, Pancho Villa.
Mexican singer Flor Silvestre, one of the most iconic performers of Mexican and Hispanic music, is also a prolific and versatile actress of Mexican cinema's "golden age".
 In her 40-year acting career, she played leading and supporting roles in more than 70 feature films of various genres.
 She was one of the most sought-after actresses of the late 1950s, and, as a result, 30 of her films were released in only four years (1957-1960).
 She worked with film directors Zacarías Gómez Urquiza, Vicente Oroná, Miguel M. Delgado, Jaime Salvador, Chano Urueta, Roberto Gavaldón, Gilberto Martínez Solares, Miguel Contreras Torres, Rogelio A. González, Ismael Rodríguez, Gilberto Gazcón, Benito Alazraki, Miguel Zacarías, René Cardona, and Mario Hernández.
Walter Lang (August 10, 1896 – February 7, 1972) was an American film director.
Under the Sky of Spain (Spanish:Bajo el cielo de España) is a 1953 Mexican-Spanish drama film directed by Miguel Contreras Torres and starring Gustavo Rojo and Marisa de Leza.