Before you told me about the Coshiu Phenotype, I thought Yuji Naka looked Mongolian, cause of his Flat Nose, Thick Lips, Round Headshape, Slanted eyes, and his Yellowish Skin Complexion.
I know Yamato-Japanese are of Yakonid Phenotype, where they have sad eyes that squints down like Eeyore from Winnie The Pooh, along with light brown skin, sharp nose that is slightly curved(but not hooked like an Armenoid Jewish Nose), and a straight narrow face, similar to Amerindians(Except Amerindians have prominent cheekbones, unlike Japanese).