Conversation so far:
What languages are/were spoken by the Indigenous people of mexico?
62 indigenous languages as "national languages" which have the same validity as Spanish in all territories where they are spoken.
What is the most popular (or a few of the most spoken) language(s) from these 62 ?
which have the same validity as Spanish in all territories where they are spoken.

Question: Are there different culturally different people residing in different territories ?
Self-contained rewrite: Are there any culturally different people residing in the Indigenous peoples of Mexico's territories ?