I noticed that as well. However, looking into it, it seems to be a complicated and ever-evolving issue, and I can't find a clear consensus on what term(s) are considered acceptable in the United States, to say nothing of which no-longer-acceptable terms are still in common use anyway. I do know that there are significant differences in nomenclature between the USA and Canada.
I could give my own experience, but I don't think that would be useful as I don't have any specific knowledge of the subject, only what I've heard or read online. The best solution is probably to find someone who does know what they're talking about and ask them.