Agree that a test/check would be cool =]
I've updated the description with the changes I'll put into a PR - it's not going to be a definitive 'matchup' between the ISO and Civi, but it should bring things better in line.
This work comes out of some matching we've been doing with the county list in another database. All I can say is I wish everyone conformed to the same standard - hooray for ISOs
Hey John. Thanks for raising this set of issues. I think it would be a little less unwieldy to open just one issue for updates to regional data.
Note that CiviCRM follows the ISO convention for country & state names and has no opinion otherwise. So if we can just grab the latest data from them and plug it in, that would be ideal.