Is it true that in some South American nations, their is still a three tiered power structure?

Question

Creolles-upper class

Mestizo-middle class

Indigenous-lower class

If so, than which countries (just curious)

Answer 1

maybe Ecuador or Peru but I'm not sure

Answer 2

I would say this structure is no longer remaining in:

Peru

Bolivia

Ecuador

But an important part of Indigenous people could be considered in the low class economic group.

The economic or power difference between Criollos and Mestizos is no longer marked as it was on the age of the Spainard Colony.