In Guatemala the indigenous Maya people are strongly represented and account for what we think of as the culture…it seems to me anyway. They are not one people by any means, more tribal, with unique languages, styles of weaving and dress, etc.
There are also the Ladinos. From Ms Wiki: The ladino population in Guatemala is officially recognized as a distinct ethnic group, and the Ministry of Education of Guatemala uses the following definition: “The ladino population has been characterized as a heterogeneous population which expresses itself in the Spanish language as a maternal language, which possesses specific cultural traits of Hispanic origin mixed with indigenous cultural elements, and dresses in a style commonly considered as western.” Consequently, the population census include the ladino population as one of the different ethnic groups in Guatemala.