I would love to see a unit using a boleadeira as a weapon (two to three stones tied to a rope, used against mounted units). This could be either a single unit (primary or secondary) or an archer, anti-cavalry unit, shared by the Andean people or the American people in general.
https://www.portaldasmissoes.com.br/site/view/id/1369/boleadeira.html
https://pt.m.wikipedia.org/wiki/Boleadeira#:~:text=Boleadeira%20é%20uma%20espécie%20de,queda%20e%20matar%20o%20animal.