Given the discussion at the latest TC meeting, this issue may be moved to GOM (@nicholascar,@i2vana), but now I post it here in the XML repo, as this is where the code lists currently are maintained.
I recently came across the following "OASIS Committee Specification":
Code List Representation (genericode) Version 1.0. Edited by G. Ken Holman. 06 April 2022. OASIS Committee Specification 02. https://docs.oasis-open.org/codelist/genericode/v1.0/cs02/genericode-v1.0-cs02.html. Latest stage: https://docs.oasis-open.org/codelist/genericode/v1.0/genericode-v1.0.html.
Is this something the TC should look into as well, as possible format of code lists?
Bonusinfo: this specification is on the Rolling Plan for ICT Standardisation of the EU, in the section e-Goverment.