When I moved to the US, I was surprised by the common representations of Latinos held by Americans (including by American Latinos). Latinos are often thought of as racially homogenous and Latino is likened to a racial category. Like the United States, Latin America is racially diverse, so this is as ridiculous as thinking that the citizens of the US are racially homogenous.
In Latin America, like in the United States, Indigenous lands and peoples were colonized by Europeans. Like in the United States, Africans were brought as slaves to many regions. Like in the United States, Latin America continued to attract immigrants from different parts of the world after the end of the colonial era. Consequently, there are people who are of Indigenous, Black and European descent, with various combinations of the above depending on the specific history of their region and family. There are also people of Middle Eastern, Asian and other origins. So yes, there are white Latinos. There are even Asian Latinos.
In Mexico, the majority of the population is Mestizo, which refers to someone who is a mix of European and Indigenous. Since many of the Latinos in California are Mexican or Central American, they often are the face of “Latino”, to the extent that white and Black Latinos are sometimes not recognized as such. But even in Mexico, there are white and Afro-Mexican populations.
This conflation of an ethnic category with a racial one largely stems, in my opinion, from US-centrism. Part of this is the sense that diversity is the purview of the US and that all people south of the border are the same. US-centrism also shapes how the categories of “white” and “people of color” are conceptualized and delineated. I plan to devote a post to discussing the US-centrism of American racial categories and when and how it leads to confusion, but in the meantime, I want to leave y’all with this great commentary: