The term "unrecognised country" fits well with some (I had Abkhazia, Tibet and some others), but I wouldn't describe e.g. Sicily or Patagonia as "unrecognised countries". I'm not sure what a better description would be, without being too long or awkward for a title... (Maybe just "non-nation states"? Still quite awkward.)
I genuinely enjoyed this though nice job!
5* & nominated