Mostly not white folks...

Rico says that living in the Philadelphia area has shown him some new things:

Prognathism, the positional relationship of the mandible and/or maxilla to the skeletal base where either of the jaws protrudes beyond a predetermined imaginary line in the coronal plane of the skull. In general dentistry, oral and maxillofacial surgery and orthodontics, this is assessed clinically or radiographically. The word 'prognathism' derives from Greek pro (forward) and gnathos (jaw). One or more types of prognathism may result in the common condition of malocclusion, in which an individual's top teeth and lower teeth do not align properly.

and

Steatopygia, a high degree of fat accumulation in and around the buttocks. The deposit of fat is not confined to the gluteal regions, but extends to the outside and front of the thighs, forming a thick layer reaching sometimes to the knee. Steatopygia is a genetic characteristic of the Khoisan and some Bantu peoples. It is especially prevalent in women, but also occurs to a lesser degree in men. In most populations of Homo sapiens, females are more likely than men to accumulate adipose tissue in the buttock region. It has also been observed among the Pygmies of Central Africa and the Onge tribe of the Andaman Islands. Among the Khoisan, it is regarded as a sign of beauty. It begins in infancy and is fully developed by the time of the first pregnancy.
Steatopygia would seem to have been a characteristic of a population that once extended from the Gulf of Aden to the Cape of Good Hope, of which Khoisan and Pygmies are remnants. It has been suggested that this feature was once more widespread.

Rico says that there's a lot of both walking the streets of Philadelphia, and occasionally someone with both conditions...