Hierarchy of power and value is always a system of supremacy. When the hierarchies are only about specialization, they can work without supremacy. But when power is hoarded at the top, it is a supremacy culture.

I chose my words carefully. I did not talk about hierarchies in general. In what you quoted, I talked about a racial hierarchy. Can you give an example of a racial hierarchy with more power and influence as described, which is NOT a supremacy culture?