I would also find a little
Cathy quite refreshing. We're so inundated with Katies that
Cathy is the bolder and fresher choice nowadays.
I know a few Catherines. One goes by Catherine-in-full, the others by Cathie and
CAthy.
Catherine is a teen, the Cathys are both in their fifties.
I like
Katherine myself, it's a bit sharper, but I prefer
Cate over
Kate. I like
Kitty for
Katherine. I also like
Kathe or Kaethe.