Last I heard, they were unable to obtain any DNA from Kennewick Man. Maybe with the new studies they will. Would be interesting to compare with Arlington Springs Woman, but so far they have no DNA there either.
We live in interesting times. Thirty years ago some folks had everything figured out, but now things are up in the air again. That's what keeps us going! You never know what the next dig will produce.
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?)