My name is [name]Catherine[/name] and before I started learning about names, that was the only one I preferred because it seemed the most classic. However, depending on where you originate from, the “original” or “classic” spelling could be any number of spellings, including [name]Katherine[/name] and [name]Katharine[/name] (which I believe is the original Greek spelling). The only spellings I don’t like are those with “ryn” at the end because they seem like youneek versions (albeit created long ago) of the classic originals, although I admit maybe there is a culture that spells it that way that I am not aware of.
I have also known Catherines who went by [name]Cate[/name] (which I always wished I could pull off), [name]Cait[/name], and [name]Catie[/name].