[Opinions] Re: Catherine etc. nicknames
My favorite is Katyana. I've only met one and her name was short for Katharine. I like Katyana as a full name too.
For a nickname that's actually short, maybe I'd go with Kate. Cat/Kat is a little dated and Katie is a little too cute.
I also think Rina would be cool for Catherine, Katerina, etc. but I've never actually seen anyone use that.