The history of Metal in Latin America and Asia is as huge as in Europe so there are LOTS of bands to be aware of! But I hate this word "exotic", it became overused and it sounds as if "exotic" bands are a bunch of monkeys trying to copy European bands, which is very far from being the case!
Though you have good tastes for sure hehe... I guess you should also like the old Brazilian scene with SARCOFAGO, GENOCIDIO, HOLOCAUSTO, NECROFAGO, MUTILATOR, MX, etc...