New study on Estonians (pub. August) investigates the relationship between ancient European ancestry and modern genetic traits: https://www.biorxiv.org/content/10.1101/2021.08.03.454888v1.full.pdf

WHG ancestry linked to:
- light eyes
- brown hair
- decreased height, hip circumference, cholesterol, probability of dark eyes
- increased BMI, caffeine consumption, creatine production

EEF ancestry linked to:
- light eyes
- blond hair
- decreased waist/hip ratio, heart rate, probability of black hair

Steppe EMBA (Yamnaya) ancestry linked to:
- dark eyes
- dark hair
- strong build
- increased height, waist and hip circumference, cholesterol
- decreased caffeine consumption, heart rate