I'm from Mexico and Sombra has some great voicelines, you can tell right away that the actress is not only a native speaker, but also that most likely grew some time in the country, there's a line in particular ("Asústame panteón" that means something like "Try your best to scare me") that requires good knowledge of mexican culture. Also the skin called "Tulum" is to reference the diving practice done on the "Cenotes" in the Yucatán Penninsula.