Very good original question! I had to stop & think a minute, but only came up with a few.
38 special, 44 special, 45 auto rim, 32-20 and 10mm. Oh, and 32 H&R magnum. I feel like I'm missing one for some reason.
My first 41 magnum was a 3 screw Blackhawk, and I wanted to shoot it bad, without waiting to purchase brass, bullets and dies. So badly that I forked over $54 bucks for the only box the store had. It was some sort of "extreme terminal" something or another. I still have about 1/2 of that box, figuring it was "special". LOL!
But mostly it's because I had to stop the brutal assault on my hand by ordering some ugly (but so sweet) Hogues, buying the reloading components in the same order. I think I developed a flinch shooting that first cylinder.