I can see these 2 from the number format doc.  I would like to know what the others are or are these universal and not unique to Kendo UI

en-US
de-DE

Thanks,

Hello Gary,

All the available culture files are located in /js/cultures (or src/js/cultures if you prefer to use unminified code) folder of KendoUI installation directory. Please check the contents of the directory to see the full list of cultures.
This help article shows the structure of culture file and explains how to create your own.
I hope this will help.

Kind regards,
Alexander Valchev
the Telerik team