Small assemblies in non-independent territories

I am going to do a little crowd-sourcing here. What do people think is a reasonable way to define “autonomous enough” to include a territory in a set of small assemblies worthy of comparative analysis alongside independent nations with small assemblies?

That is, there are various countries with very small assemblies that are recognized as independent states, such as St. Kitts and Nevis (assembly of 11 seats) or Antigua & Barbuda (17). Like the two just mentioned, most of the small-assembly independent states that are also democracies with small assemblies are in one world region (Caribbean) and use one type of electoral system (FPTP).

Now suppose one wanted to branch out and include small territories that were either not in the Caribbean or used PR. Suppose further that one did not want to include obviously fully dependent territories that just happen to hold elections for an internal legislative council. Where would one draw the line?

For instance, are the Faroe Islands and Greenland “autonomous enough” to include? What about Aruba and CuraƧao? These use PR systems, and the first two are not Caribbean. Or the Cook Islands, with is FPTP but non-Caribbean?

One would need a reasonable standard for autonomy. I sort of feel the places I just named might qualify, but I do not know why I feel that way. And I do not want the can of worms opened whereby I’d be asked–legitimately–why did you exclude Turks and Caicos (for example)? (Other than, well, I already had enough FPTP Caribbean cases.)

The smallest currently included independent country in my related datasets seems to be St. Kitts & Nevis (pop 54k). One of the territories I mentioned is much smaller than that (Cook Islands only 15k), but others are of the same order as St. Kitts (like Faroe Islands and Greenland, 53-55k). I probably have a floor somewhere on population–which might well exclude Cook Islands–but my current query is for a reasonable standard on what is sufficiently self-governing to be comparable to small independent states for purposes of analyzing their assemblies and electoral systems.

What do readers of this site think?