I’m mixed like many Latinos are in certain countries, White, black, a small bit of indigenous, this is common in the likes of Cuba, Venezuela, and Brazil, but I’m not Latino, my white ancestors come from Britain and northwest Europe, there’s come from like Iberia and Southern Europe, both got black people from the same areas of Africa though so that’s what overlaps.
Fair ig, it’s just a matter of demographic conditions and history, the instances of Chinese, Japanese, and Korean people simply being called “Asian” was because the Chinese to begin with were mainly the first wave of Asians to come to the US, and were highly influential out west, so much so that states like Idaho were once 25% Chinese, then you had Japanese people coming in and shit. There just werent as many south Asians coming in that would warrant a wider used distinction.