I have discussed regions, tribes and nations with high levels of Rh- frequencies many times.
Here is a summary:
The Basques
Please keep in mind, that 3,000 to 4,000 years ago, their y-DNA (male) gene pool was pretty much replaced by the Proto Celts (R1b) who invaded them.
The Scots
The (Northern) Irish
The Walsers
The Amish
The Sinai Peninsula Bedouins
The Karaite Jews
The Black Jews of Cochin
Samaritans
Isolated Berber tribes
Parts of the Netherlands
Use the search box for more information on any of these groups
What do they have in common other than Rh- blood?
Red or reddish hair might be frequent
A strong sense of independence and freedom as well
Let’s revisit ancient Rh- tribes:
That is the other thing that societies high in Rh- blood seem to have in common