"The impact of growing up together in the same household on adult personality similarity is smaller than the impact of shared genes", something like that -- which I think would at least still be controversial among the general public.
Very small contribution of shared environment on adult personality traits probably qualifies?>
Några urval ur mixen:
- Bardcore
- TenaciousD / Weird Al
- Babymetal
- Diverse folk metal (mest vikingatema)
- "dvärgmetal" om det är ett tema. Ganska nishad fantasy-genre