I went to school with several Conors / Connors. They were mostly Conors though and I don’t know why that spelling was so common. Anyway, I find it bland and preppy.
I prefer the spelling
Conner — I like that it looks exactly how it sounds, it’s more down-to-earth to me (I’m pretty biased based on my associations lol). I wouldn’t use it though...it’s not my type.