Hola,
I’m a native Spanish speaker from Spain (I live in the U.S., spoke English all my life with a native English speaking father and my English could be better than my Spanish). Since I am Spanish, we use vosotros. While I heard people in the U.S. learn “ustedes comen”, I would say “vosotros coméis”.
I was taught vosotros but I learnt in a country closer to Spain than to LatAm. I think they mentioned ustedes in later parts of the course but vosotros was the standard second person plural pronoun we were taught.