Which category/subcategory do you guys think it should be in (in iTunes connect)? I want to put it in the least crowded one but also in categories that make sense for it.
Greetings cocosbean!
As far as i am concerned skiing is a wintersport and an olympic discipline.
That’s why from my perspective it should be under sports, or sportgames genre.
If you’ll find a Wintersport-Games category in iTunes let me know. 
Hope that helped.
Cheers