Historical Unarmed Martial Arts

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What are some examples of unarmed, historical martial arts (not like modern HEMA stuff) other than Greek boxing, pankration and wrestling?

Speaking of those three, do we know how different ancient Greek boxing was compared to what boxing is today? Was it less moving, dodging and blocking and more just standing there and punching each other until one of you goes down?

And Pankration, was this basically the iron-age equivalent of what we would consider MMA? Or was it just a combination of the boxing and wrestling of the same period?

Finally, what other regions, countries, Kingdoms or the like had their own particular brand of unarmed fighting that we have historical evidence of? Be it wrestling and grappling of different types or some kind of striking art, is there any other good examples of significant fighting styles that were around before, say, the early modern period and weren't focused on at least primarily on weapon usage and instead used for unarmed combat or self defense?