Hey, Allan, I didn't mean to start an argument!
I guess it is a matter of perception. I know that to many people, raw umber looks like it is in the yellow family. You are probably in the majority here. But to me, when I look at it, all I see is a neutral earthy tone. When I think of yellow, I think of sunlight and warmth. But raw umber is dull, opaque, and rather cool to my eye. Don't get me wrong, I respect your perception of it, but as hard as I try I can't see it! I guess that's why different artists use different colors.
Alex