Question: Who is known as an American film director, Irvin Willat or Ted Kotcheff? 

Context paragraphs:
The Siren Call: The Siren Call is a 1922 American drama silent film directed by Irvin Willat and written by Philip D. Hurn, Victor Irvin and J.E. Nash.  The film stars Dorothy Dalton, David Powell, Mitchell Lewis, Ed Brady, Will Walling, Leigh Wyant and Lucien Littlefield.  The film was released on September 17, 1922, by Paramount Pictures.

The Enchanted Hill: The Enchanted Hill is a 1926 American Western silent film directed by Irvin Willat and written by James Shelley Hamilton and Peter B. Kyne.  The film stars Jack Holt, Florence Vidor, Noah Beery, Sr., Mary Brian, Richard Arlen, George Bancroft and Ray Thompson.  The film was released on January 18, 1926, by Paramount Pictures.

The Isle of Lost Ships (1923 film): The Isle of Lost Ships is a 1923 American silent adventure/melodrama film directed and produced by Maurice Tourneur and distributed by Associated First National Pictures.  The film is based on Crittenden Marriott's novel "The Isle of Dead Ships" c.1909.  The story was re-filmed in 1929 by director Irvin Willat.

The Story Without a Name: The Story Without a Name is a 1924 silent film melodrama directed by Irvin Willat and based on a novel by Arthur Stringer.  It was produced by Famous Players-Lasky and distributed by Paramount Pictures.  The film stars Agnes Ayres.  Also known as "Without Warning".  This film is lost.

Ted Kotcheff: William Theodore "Ted" Kotcheff (born April 7, 1931; as Velichko Todorov Tsochev) is a Bulgarian-Canadian film and television director and producer, known primarily for his work on several high-profile British and American television productions such as "Armchair Theatre" and "".  He has also directed numerous successful films including the seminal Australian classic "Wake in Fright," action films such as "First Blood" and "Uncommon Valor", and comedies like "Weekend at Bernie's, Fun with Dick and Jane," and "North Dallas Forty".  He is sometimes credited as William T. Kotcheff, and currently resides in Beverly Hills, California.

Fog Bound: Fog Bound is a 1923 American drama silent film directed by Irvin Willat and written by Jack Bechdolt and Paul Dickey.  The film stars Dorothy Dalton, David Powell, Martha Mansfield, Maurice Costello, Jack Richardson, Ella Miller, and Willard Cooley.  The film was released on May 27, 1923, by Paramount Pictures.

Irvin Willat: Irvin Willat (November 18, 1890 – April 17, 1976) was an American film director of the silent film era.  He directed 39 films between 1917 and 1937.  Early in his career Willat worked as a cinematographer on several films.

The Isle of Lost Ships (1929 film): The Isle of Lost Ships is a 1929 talking film released in an alternative silent version with a Vitaphone track of effects and music.  It was produced by Richard A. Rowland and distributed by Warner Bros..  Irvin Willat was the director with Jason Robards, Sr. and Virginia Valli in the leads.  It is based on the 1909 novel "The Isle of Dead Ships" by Crittenden Marriott, and is also a remake of Maurice Tourneur's now lost 1923 classic of the same name.  This film is preserved at the Library of Congress.

The Law of the North: The Law of the North is a 1918 American silent drama film directed by Irvin Willat and written by Ella Stuart Carson, John Lynch, and R. Cecil Smith.  The film stars Charles Ray, Doris May, Robert McKim, Gloria Hope, Charles K. French, and Manuel R. Ojeda.  The film was released on September 29, 1918, by Paramount Pictures.  It is not known whether the film currently survives.

On the High Seas: On the High Seas is a lost 1922 American silent adventure film directed by Irvin Willat and written by Edward Sheldon and E. Magnus Ingleton.  The film stars Dorothy Dalton, Jack Holt, Mitchell Lewis, Winter Hall, Michael Dark, Otto Brower, and William Boyd.  The film was released on September 17, 1922, by Paramount Pictures.  It is not known whether the film currently survives.

Supporting paragraphs: Irvin Willat Ted Kotcheff
Answer: Irvin Willat