The perfect peanut is the Virginia Peanut. They are larger and a bit oiler with a very crunchy radicle.
The radicle is the little piece that holds the two sides together.
The Good Earth Peanut Company in southern Virginia have the best ones I’ve found.
The best roasted peanuts that I ever had were from a small shop in northern Georgia. After that, mass produced peanuts from a grocer’s are animal feed. Mass produced stuff has taste LAST behind yield, disease resistance, etc.