I am thinking of coining a new term. The “sea urchin” kid – well-rounded and pointy at the same time. 
Totally makes sense to me that It is one thing to be undecided your senior year in high school, but by the time you graduate from college, you should be able to commit to something. There’s no grad school for “well-roundedness” – sooner or later you have to get a job. The transition is interesting to me – the whiplash of “try everything” mentality in high school to “be the best in something” trope in college apps is so contradictory. You can’t do both. Maybe the simple key to it all is just being authentic – to use an over-used word.
But one other observation – seems weird to me that the tippy tops go for primarily spikes, and the sea urchins go elsewhere, as seems to be suggested up thread. If you are a school with <10,000 students, just populating all of the sports teams that way, let alone an orchestra, theater department and STEM departments is mathematically impossible. Throw in URM and legacies, and no way is there a place for everyone the admissions office needs. It surprised me reading that some smaller LACs have up to 60% athletes in their student body. But mathematically they would have to – they would just have to have a lot of athletes that are “plus” something else.
I would think it would be flipped. The bigger schools can afford the spikey kids and the smaller “elite” schools need to have kids that check more than one box. For that reason alone, thinking on it, the spike narrative has to be overblown.