The old westerns were a great source of catfights, and the 1950's seem to be the era with the most. Yeah, there were a lot. Off the top of my head I can list a few: "The Woman they Almost Lynched," "San Antone," "The Gatling Gun," "Destry," "Destry Rides Again," "Frenchie," "Dalton's Women," "Lady Godiva Rides Again," "Go West Young Lady," "Outlaw Women," "Wild Women (made for TV)," "Belle Starr," "Star in the Dust," "The Legend of Frenchie King," "Dragoon Wells Massacre," "The Harvey Girls," "Lonesome Trail," "The Gunslinger," "Poker Alice," "Colorado Territory," "Jesse James Women," "Gone With the West," and many more that I can't recall right now. BTW, the most modern western catfight is in "Bandidas."
I remember the old ones very well because back in the days before VHS and YouTube, we catfight fans had to scour the TV Guide for movies and air times. It often meant getting up in the middle of the night, in the middle of the week to catch the fight -- that's how few and far between they were. So, one's memory was an essential asset in order view this stuff.
Regarding spaghetti western catfights, I suggest that you check out Youtube. Movie names aren't included but if you search for "Italian western catfights" you'll get several hits.