White and English-speaking
Western European (especially Northwest European)
Northeast Asian - Japan, Korea, China to some extent (this also includes Taiwan and Singapore, because they are majority ethnic Chinese)
not to mention a few small muslim countries that are filthy rich due to oil money, relative to small population sizes
This entire list only accounts for 25% of the population of the Earth (not counting China).
Is all this just a coincidence, the result of historical factors and legacies? Could there be a reason for the correlation?
Could this potentially help explain why the US has long stood as somewhat of a paradox among the developed list of countries?