Edit for context:
My view is transracial isn’t valid and this person is trying to dogwhistle. I’ve already blocked this person, and now they’re going after my friend saying my friend is transphobic because they disagreed with them about transracial being a thing (they’re purposefully leaving the context out so my friend looks transphobic when what my friend really said was transgender is valid but transracial isn’t)
I think a better word for it would be “Transcultural” or “Transethnithicy” ?
But I’ve never heard of that specifically, closest people I know of are people with parents from other cultures who grew up in a different culture than one or both parents, call themselves “multicultural” or as having “multiethnicity”…