When I road-tested it before jacking it up, I thought it might possibly be a bearing in the center differential. Narrowing it to the right front, clearly that corner, means it must be something very near the hub/bearing if not in
I googled and found that other people with the same car had the same noise and it turned out to indeed be the wheel bearing, though one had a brake caliper missing a mounting bolt.
The stories all seem to go the same way too, with the owner being told it's their tires so they buy the expensive tires that go on that car and the noise doesn't go away, then it ends up being the bearing.
Wheel bearings can make all kinds of different sounds...hum, squeak, grind, squeal, barking, foghorn, leghorn, horndog, corndog, corncob, cobbler, pie, empanada...oh wait I got carried away there.