[kijeda]

Are you sure its not in reference to "Greek" the language, rather than "Greece" the country? "el" is coding for Greek in ISO 639, IANA language subtags, etc.

[bloak]

It does seem to be EL for the country. See, for example: https://publications.europa.eu/code/pdf/370000en.htm

EDIT: Perhaps it would have been nice if ISO 639 and ISO 3166 had been better coordinated so we didn't have cs_CZ, da_DK, sv_SE, ...