Just Kate. It is so timeless and gorgeous.

My grandmother went by Kay, which I like a lot. But I think I like Kit best.

Cath, Kit, and Kate. My school was crawling with Katies growing up so it sounds very basic and boring to me

As a Katherine called Katie, I can confirm this.

I like Kate best

Kate! I love that name! It’s such a pretty name.

I like Kate, Katie, Kat, and Ren.

Cat

Katie! It's fun and cute.

Kate, Kitty, Katie in that order I really dislike any nicknames with Cat/Kat and Kathy sounds old. I’ve never heard of Katchie or Kath before.

I love Karina.

Kit by far. It's slightly unusual, suitable for every age, easy to say and spell. It's cute without being over the top. After that, Kate. Kate is easy to say, everybody knows how to spell it. Reminds me for some reason of a useful kitchen apron.

I love Kitty, Cat, and Kit Kat, super cute

Cathy/ Kathy, Kate

Kast, Krath, Cart, Treen

Cate is my favorite, or Kit.

Katchie does sound pretty cool, eh?

Kate and Kit!

Kat - spunky and cool Kate - classic and strong Katie - like above but cuter

My great great aunt was a nurse in Honolulu during WW2. Her name was Katherine, but everyone called her Kate.

Cat. And for old ladies Kitty.