Are there any Mexican professional hockey players in the NHL?
Nope. You can’t have people of ‘Mexican’ descent any more than you can have people of ‘American’ or ‘Canadian’ descent. Mexicans are primarily of Spanish descent. White, English-speaking North Americans are primarily of British descent, and white, French-speaking North Americans are primarily of French descent. Maybe in a few hundred years you could be of ‘Mexican’ descent, but not yet.