Lol, I'd settle for communication, social skills, and some awareness of professional etiquette if one doesn't want to go as far as nepotism and cronyism.
I'm probably in a bit of a bubble but I work with too many engineers who don't like that they have to work with other people. If a super STEM person ever wonders how "less smart but friendly with the boss" people advance further, introspect a bit on whether anyone else can understand your big brain thoughts or if they die as soon as they leave your mouth.
Making friends and doing clubs in college is a good way to learn to be smart and to make sure you can adequately communicate your smart ideas. Goes with the theme of "don't stress GPA, be well-rounded".
I grew up with two little mutt terriers of some sort. One loved swimming, the other didn't. I'd go out lake kayaking with the non-swimmer perched in front, content to watch. The swimmer would chug alongside my kayak like a little tugboat. That lad would swim for miles if I let him. The finest of summer days spent in the water with those two.