Swiss Instagram at this size is two crowds, not a spread. Competing athletes make up the largest group, most of them alpine ski racers, and touring stand-up comedians make up the second. Almost every account here belongs to one or the other.
Size does not predict how far a post travels. The widest video reach on this list belongs to accounts in the middle of it, and several creators are watched by more people than follow them, while some of the largest accounts are watched by fewer.
Being based in Switzerland does not mean having a Swiss audience. Around half the list draws most of its followers from outside the country, and that split tracks neither follower count nor how well known the person is at home.