This is an interesting thread idea. I was thinking the same thing. Could we take the whole type dynamics further in explaining some of these things.
Whether it is possible is dependent on how type develops. I'm guessing the make up of humans throughout the world is pretty similar. But is type genetic, environmental, etc. When and how does it get defined, and could living in a different place change the distribution?
Another option is environmental and social situation moves different types to the top in different countries. And the way that affects the public opinion and customs in that country causes people from that country to seem more like those types.