Question: Are William Witney and Frederick Wiseman both documentarians?

Context articles: Headline Hunters (1955 film)
William Witney
The Long Rope (film)
Paratroop Command
Frederick Wiseman
Mysterious Doctor Satan
Drums of Fu Manchu
State Legislature (film)
The Crimson Ghost
Law and Order (1969 film)

Headline Hunters is a 1955 American crime film directed by William Witney and written by Frederick Louis Fox and John K. Butler.
 The film stars Rod Cameron, Julie Bishop, Ben Cooper, Raymond Greenleaf, Chubby Johnson and John Warburton.
 The film was released on September 15, 1955, by Republic Pictures.
William Nuelsen Witney (May 15, 1915 – 17 March, 2002) was an American film and television director.
 He is best remembered for the movie serials he co-directed with John English for Republic Pictures such as "Daredevils of the Red Circle", "Zorro's Fighting Legion" and "Drums of Fu Manchu".
The Long Rope is a 1961 American Western film directed by William Witney and written by Robert Hamner.
 The film stars Hugh Marlowe, Alan Hale, Jr., Robert J. Wilke, Chris Robinson, William Kerwin and Jeff Morris.
 The film was released in February 1961, by 20th Century Fox.
Paratroop Command is a 1959 war film directed by William Witney, starring Richard Bakalyan, Ken Lynch and Jack Hogan.
 Quentin Tarantino, an admirer of Witney's work, considers this film to be among his four best.
 American International Pictures originally released the film as a double feature with "Submarine Seahawk".
Frederick Wiseman (born January 1, 1930) is an American filmmaker, documentarian, and theatre director.
 His work is "devoted primarily to exploring American institutions".
 He has been called "one of the most important and original filmmakers working today".
Mysterious Doctor Satan is a 1940 Republic Pictures black-and-white film serial, produced by Hiram S. Brown Jr., directed by William Witney and John English, that stars Edward Ciannelli, Robert Wilcox, William Newell, C. Montague Shaw, Ella Neal, and Dorothy Herbert.
 The serial's name is derived from that of its chief villain.
Drums of Fu Manchu (1940) is a 15-chapter Republic movie serial based on the character created by Sax Rohmer.
 Though using the title of the ninth novel in the series, it actually is based on numerous elements from throughout the series to that point, cherry-picked by the writers.
 It starred Henry Brandon, William Royle and Robert Kellard.
 It was directed by the legendary serial team of William Witney and John English and is often considered one of the best movie serials ever made.
State Legislature is a 2007 American documentary film directed by Frederick Wiseman.
 It details the workings of the Idaho Legislature.
 Wiseman filmed for a total of 160 hours over a full 12-week session of the legislature, later editing his content down to a 3 ½ hour film.
 Wiseman was interested in the topic as a way to show one of the more basic political systems in America at work.
 It was first broadcast on PBS on June 2007.
The Crimson Ghost is a 1946 Republic film serial directed by Fred C. Brannon and William Witney with Charles Quigley and Linda Stirling playing the leads.
 This was Witney's last serial, after a career that left him one of the most praised of all serial directors.
 The serial was re-released as a six-episode television series in the 1950s and as a television film called Cyclotrode "X" in 1966.
 In the 1990s "The Crimson Ghost" was one of only two Republic serials to be colorised.
 The villain of the serial, the Crimson Ghost of the title, is one of the most visually striking of the medium.
 The horror punk band Misfits adapted his visage as their skull logo, and he has appeared in the music video for the song "The Number of the Beast" by Iron Maiden.
Law and Order is a 1969 documentary film by Frederick Wiseman that shows the daily routine of officers of the Kansas City Police Department.
 It was Wiseman's third film after "Titicut Follies" (1967) and "High School" (1968).
 The films were among the earliest examples of direct cinema by a U.S. filmmaker.