It is obvious that there are many attributes that varies (skin color, eye color, eye shape, hair thickness, hair color, nose shape, lactose tolerance, height distribution, breast size, etc.).

But, it doesn't mean that every attribute varies this way. That's exactly what I'm arguing against actually.

About psychological traits you mention, there's so much cultural influence I don't think genetics would have any visible impact even if it was a factor (I'd be surprised if genetics played zero role here, but I expect the genetic-induced variance to be much lower than the culturally-induced one).