Not trying to be racist but it's almost always a man and a woman who are both White - and probably a Black side character if they are feeling generous.
Hollywood's (meaning movie and TV producers in general) default is white and straight.
The hetero norm is changing slowly, but the white norm is still very much a thing. Typically for a movie to feature a predominantly POC cast, it's directed by a POC and listed as a POC movie, rather than just... well, a movie.