If I start at north Doggerland and draw a circle with a radius of about 400 miles, I capture every one one of my ancestors for the last 5,000 years (except for the last 400, which adds in NH, MA, ME, and Nova Scotia). Most likely. Most of that is water, and most of my ancestors lived on one coastline or another along the North Sea. People live near seas and rivers the world over. My wife's family - similar, but with a fair bit of Irish farther to the west. They didn't interbreed with other groups because they didn't even know those groups existed. They thought the people across the bay were dangerous and unreliable.
If I were deeply into whiteness I would rejoice, because these people are about as pale as it gets - as are the current Wymans, until we brought in people from Romania and the Philippines. But I also read up on culture and prehistory, and don't think I would have felt at home with most of those folks. Hell, I didn't like most of the ancestors that I actually knew all that much, and hear bad reports about some of the ones before that. They might not like me all that much either, if they could journey forward in time and sit on my porch.
I have read several accounts of African-Americans going back on a roots journey to Africa and deciding they were lucky their ancestors were sold into slavery and got out of that place, odd as that seems. We have a similar story, of my mother and her favorite cousin visiting distant never-seen relatives near Jonkoping, in the 1990's and finding those Swedes didn't like anyone - not the people in the next town, not the people in Stockholm, not the Norwegians, not anyone. My mother was glad to get out of there.
Most of your ancestors did about as well as they could under the circumstances, but their times were not ours and you wouldn't have liked them much. You would have found them slow, ignorant, indifferent to violence, intolerant of people twenty miles distant, dirty, and smelly. On the other hand, they would find you pampered, soft, arrogant, overfed, sexually uncontrolled, irreligious, and wasteful. And they would be right, I suppose, though I don't think I would hang around to hear them talk about it.
We might agree about beer and wine, but even our foods would be intolerable to each other.