On the note of mongols... several historical accounts describe lamellar as armor they wore.... and remains from battles in russia also show they wore brigandine...
The mongol armies were so effective because of their extreme discipline and organization... the majority of the history about them was written by their enemies and that ends up being more public knowledge than the histories they wrote about themselves. Which the world pretty much didnt have access to till the 1990's.
Without question the luring cavalier is the best example of class designed to be a mongol.
The bow is considered to be the most efficient bow ever made. It's transfer of force far exceeds any other bow until the modern compound bows.
-ref. Rabissi, Gorelik, Weatherford all modern historians well respected in there fields
