Your "top 50 developed nations" list actually omits China, the nation with the most extensive modern rail and nuclear power, one of the top three space-exploring nations. Or do you consider them "not developed"?
I don't know how it is in your country, but here China is still categorized as a developing country. We still pay them development aid. But I do think its miscategorized, if anything China is now the second world power and maybe soon the first. But of course the chinese government has now reason to stop this. The more power they can grab while still posing as a poor country, the better (for them).
Honestly I just asked ChatGPT for the list and didn't notice x.x Interesting omission on its part, haha. I asked ChatGPT what's up, and it replied:
"China is not in the top-50 group of “very high human development” countries. The United Nations Development Programme’s 2024 Human Development Index (HDI) places mainland China around the mid-60s globally (most recent figure is roughly 64th–68th, depending on the exact update).
The “top 50 developed countries” list I used earlier is based on that HDI ranking, so China does not qualify as one of the top 50 most-developed nations. Hong Kong, which is a Special Administrative Region of China, does rank in the global top 10 and is why you saw “Hong Kong (China SAR)” in the earlier table—but that is treated separately from mainland China in the UN’s HDI reports."