Also, I realized that when a cowboy does a super quick draw and shoots 3 men before they can draw it’s just like an anime when there is a flash and the hero sheathes their sword, with enemies falling over dead.

Makes sense, especially for Fistful of Dollars, Few Dollars More, and The Good, the Bad, and the Ugly. Fistful was the Western version (as in shot for shot remake) of Kurosawa's Yojimbo, a samurai movie. Anime also got it from samurai flicks and Kurosawa was the guy for that. He made more money from the Fistful of Dollars settlement than he did from Yojimbo, though.

For even more (out possibly much less because it's not great) fun, there's a movie called The Warrior and the Sorceress that's also a remake of the same film, except it's fantasy and has a topless sorceress running around. It's got David Carradine playing a character named Kain. It came out during the sword and sorcery boom of the 80s (Conan, Sword and the Sorcerer, Deathstalker, Beastmaster, and a bunch of others). Speaking of other Sword and Sorcery flicks, at last one of the scenes is recycled from Deathstalker.