Walnut or Rosewood
It's a shame that legitimate usage is few and far between.
Historically, stain is not applied with a design ethic that I appreciate. And I mean historically in a literal sense, in addition to the more colloquial 'in my experience' sense. And I certainly would say their usage is far more legitimate in restoration.
Paint is another ball game, I can quite like painted furniture.
And bare wood is another question entirely!