I expect Arlington Springs Woman, Kennewick Man, Spirit Cave Man and Buhl Woman are all from a common group.
What do you make of the 8,000 year old bog mummies (Windover) found in Florida? Last I saw was a TV special covering the discovery and some PhD said the DNA indicated they were Europeans. (Whatever European means?)
We have some DNA results.
The one that really blows the mind is the Bat Creek stone found in Tennessee. This one is quietly ignored, even though the ramifications are huge.