Olmec: this was a very mysterious civilization, since very little is known about this Mesoamerican people. Despite that, they did a quite notiable artistic legacy such as stone masks and sculptures.
Zapotec: Zapotec where a mesoamerican civilization that is most known for it's architectural legacy rather than anything else.
Chavin: an andean civilization that has a legacy similar to the Maya's, where you can find pots, carvings, sculptures and buildings.