The list shows countries like Switzerland, which, as far as I’m concerned, hew way more closely to this definition…
…than this one…
So, something to do, then, with Switzerland being a “neutral” country during WWII, (or Cold War, or whatever), or…?
Seeing Sweden and Finland on there, heh, but no Norway?
And no North Korea?!?!?!?!
Found all that odd, but if someone feels differently, am curious to hear how so.
ETA:
ACK - brutal - didn’t scroll down far enough to see updated 2020 list with none of those countries on it anymore. (but still no NK, though)
This seriously takes quite a bit of air out of the OP and will have no problem if this gets cornfielded.
My understanding is during the cold war the western definition was western wealthy nations were first world, the USSR was second world and everyone else was third world.
Better definitions now are low income, middle income and high income nations.
2nd World Countries was USSR, The Eastern Bloc, China & Cuba as I recall it. North Korea could be considered part of the 2nd World also back in the day.
So the term is a cold war term, but even during the cold war it was a misnomer. The intention was that the former colonies that made up the poorer parts of the world would stay neutral, and neither align with the US (the first world) or the USSR (the second world). But that absolutely did not happen those poorer countries absolutely could not stay neutral and had to choose a side (or in the example mentioned in the OP, Korea) have one chosen for them.
Also the term “developing world” has also gone out of fashion and the preferred term is now “the global South”