The Kata of Katas is basically the README of the Code Katas repo in code form. In this kata, each Kata is associated to the technologies (Language and Library) they have been implemented in and that a developer can learn.
Kata, Language and Library are implemented as Java Enums.
There is a single test where you have to group the Katas, find the katas common to various languages and libraries, and count the Kata by Language and Library.
Start here:
KataOfKatasTest