The Teozacoalco map strikes me as created by someone who understood the idea of a round Earth. Notice the orientation of the drawn characters on the surface. Did they have this notion already? Certainly the ship navigators would have.
That's totally wrong, common people knew the Earth was round for 2 millennia in the old world.
In the new world, surely the Maia knew it as well given their extremely advanced astronomical knowledge for the time. Incan astronomy, although not as advanced, was still quite sophisticated, they surely understood moon ecplipses well enough to get that the Earth was round.