My families Shared DNA with a dark-skinned, blue-eyed, 8000 year old Cave Man and good news for me, I am the least Cave Man of them all.
I’m sure a lot of people have already compared their DNA to the amazing resources that gedmatch has archived on their Archaic DNA samples page. Here there is a good list of ancient DNA uploaded by Felix Immanuel.
I have so far tried and tested all of my Kits with these samples and they have yielded varying results.
Many return as no Match, but there are a fair amount that I Match with.
The following is my DNA Match to Loschbour Man, A hunter-gatherer who lived 8000 years ago. The almost complete skeleton was discovered in a shelter under an overhanging rock at Müllerthal , Löschbur locality , near the Black Ernz , by the amateur archaeologist Nicolas Thill in 1939.

Below is the archaic DNA sample that I have tested with and my family groups shared DNA.
Sample Name: Loschbour
Sample Location: Loschbour, Luxembourg
Gedmatch Kit number: F999918
Sex: Male
Y-DNA: I-CTS772
Mt-DNA: U5b1a
Age of remains: 8,000 years
DNA KIT ONE: Stephen Kuta Senior
17.22% shared DNA
DNA KIT TWO: Stephen Robert Kuta Junior
14.25% shared DNA
DNA KIT THREE: Christine Bean
16.56% shared DNA
DNA KIT FOUR: Linda Cottiss
15.56% shared DNA