Mecheon
Sacabambaspis
I know getting into how D&D has handled stuff from out east is an excercise in frustration, but like... I would not say chi is a supernatural energy in the slightest.Monks harness a supernatural energy called chi. Its right there in the class description.
Of course this gets into my frustration with "Its either magic or its not" madness we've dragged psionics into and why we really need to flavour wizard/etc stuff as Arcane magic, to make it clear lts distinct