Here is my story on culture/race and mbti. Yesterday I went to the gym and it was all african americans, and you know what, I felt much more comfortable around them then your standard white guy. This is my thinking. The african american culture seems to be a much more XSFP culture. I'm not saying there are more XSFP's, I'm just saying they have a very XSFP outlook on life. When in the gym, I wanted to use a bench and there was someone on it so I asked if I could work in. As he looked up I realized he was an ISTJ but he happily chimed "sure man no problem, let me just finish this set". Now usually if I ask a guy who is a white ISTJ, he has to pull the whole macho thing (this is in my gym, I'm not saying all ISTJs are like this) and and tell me to wait till they are completely finished, usually in a very rude manner (not that I care that much). In white corporate America, you dont necessarily need to be extremely smart to get ahead, as long as your a hard worker. To me, white corporate America tends to seem to look well upon the XSTJ culture. Even some XSFP white guys I know have this XSTJ mentality. When in the gym with all of the african americans, even the XSTJ's put me at ease because of what I see as a culture that accepts XSFP.
That's just from personal experience. Wouldn't mind hearing other ideas.