Google wanted to be politically correct and gave faces different colors. But apparently using "black" or "asian" is a shame too so all of these emojies have same name.

This decision was very poor as it's hard to implement this duplicity in frontend so as always Devs choose easiest choice - just use the first one. And first one is always yellow...

Congrats on making whole lazy Dev world using your "correct" emojies enforcing only one face style.