"There are many subsections of the western genre, from neo-westerns like No Country for Old Men to acid westerns like El Topo to anti-westerns like McCabe and Mrs. Miller. One of the most popular is the spaghetti western. Literally, a spaghetti western describes a western made by an Italian filmmaker, but the style is defined by certain qualities.
As seen in Sergio Leone's seminal masterpiece A Fistful of Dollars, spaghetti westerns exhibit more brutal violence than traditional entries in the genre, as well as a bleaker view of life in the Old West that takes a peek behind the well-worn, whitewashed myths."
From Ben Sherlock, "A Fistful Of Dollars & 9 Other Essential Spaghetti Westerns." 5 March 2021. Online: https://screenrant.com/fistful-dollars-best-essential-spaghetti-westerns/