Alphabet tomato garden for my toddler-need an "X"

[linzelu100]

I'd like to put together an alphabet tomato garden for my toddler next year with 26 beds and a tomato variety in each, that begins with the letter it is in. For example-
A-African Queen
B-Bumblebees
C-chocolate stripe

and so on. She is getting more into gardening and I think we will both like it But I am stumped on finding an X tomato. Tatiana's has listed:

XUXA
XANTHI

but no current suppliers. Any "X" suggestions?

Lindsey