Apart from being Westerns, what do the films "A Fistful of Dollars" (1964), "The Magnificent Seven" (1962) and "The Outrage" (1964) have in common?

Great question!

All three were based on films created by Akira Kurosawa! "A Fistful of Dollars" was based on the film "Yojimbo" which was co-written, produced, edited, and directed by Akira Kurosawa. The Magnificent Seven" was based on the film "Seven Samurai" which was co-written, edited, and directed by Akira Kurosawa. "The Outrage" was adapted from the 1950 film "Rashomon" written and directed by Kurosawa. Kurosawa. In 1990 Kurosawa won an "Honorary Academy Award" for lifetime achievements in filming.


https://en.wikipedia.org/wiki/Akira_Kurosawa
https://en.wikipedia.org/wiki/Yojimbo
https://en.wikipedia.org/wiki/Seven_Samurai
https://en.wikipedia.org/wiki/Rashomon