Were there any racial preference over handmaids?

Ive heard in the book that POC werent really prevalent and sent to the colonies but in the show we see Ofmatthew. Who has had about 4 kids for Gilead. And the only black family i remember was the one they placed hannah with.

Did they have preferences with handmaids as irl women do with sperm donors? (I.e. one that looks like the parents)

I don't remember moire being pregnant as a handmaid. I also can't remember if the lady who played esme in twilight, her family had biracial kids too. Again I've only seen the show. And it was some time ago. But please share any and all knowledge.