Types of knives in Counter Strike

I was playing CS yesterday and saw some really nice knife skins, and each one was different not only in color but also in shape. I didn't even think about the fact that they could be so different. What types of knives in Counter Strike are there? Do their differences affect the gameplay?

From what I understand, the bigger the knife itself, the more damage it does to the enemy. When I made a build for myself, loading mods from all-cs into a clean build, I also paid attention to the variety of knives, including their rarity. My brother found a beautiful bayonet knife in red, very large. I prefer the Kerambit, its rounded shape can kill an opponent with one blow, or two if I aim badly. Especially its shape reminds me of a crescent moon, I also found it in delta color. It looks very atmospheric on maps with stormy skies.