I don't think Vickie/Jessi are even Caucasian. There. That's a radical statement!

No, it's not. That's the conventional statement. DAZ sells V3 with the claim that she can be any woman. Or even any man.

I'm the radical. I don't believe she can be any woman. She was modelled and scanned from Caucasian references, with ethnic morphs added later...and it shows.

But no problem, to explore your point of view, to your knowlege has anyone ever modeled a figure and brought it into poser?

Obviously yes. DAZ ain't the only game in town, not by a long shot.

And if so, what race was it?

Most of them are Caucasian. The Japanese modellers do Japanese figures sometimes. At least, to my eye they look Asian, though usually quite stylized.

Are there 'ethnic' models at Turbo Squid and other unPoser resource sites?

I haven't a clue. I don't shop at other sites, especially not TurboSquid. But I would expect that there are.

I realize "race" is a loaded word. Many scientists say race is does not exist; it's a social construct, not a scientific one. And I tend to agree. However...there is such a thing as geographical variation. And it is so distinctive that when a skeleton is found in the woods or something, forensic anthropologists (and even savvy laypersons) can tell from the bones if the owner's ancestors came from Asia, Northern Europe, or Africa. The differences are more than skin-deep. They are bone-deep. It's that difference in basic structure that makes it so difficult to morph any single mesh into "every woman" (or man).