CF is the only outfield position that is truly recruited solely for the purpose of playing outfield. If a player is talented enought to be recruited as a mif but not talented enough to start yet up the middle lf and rf become very good options. A 3b or 1b who can hit will many times find themselves in a corner OF position if they can not beat out the other corner inf's.
Pitchers
SS
Catchers
Position specific pecking order.
The 2nd best SS is the 2B. The best catcher is the catcher. The best pitchers pitch. The best 3B is the 3B. The best 1B is the guy who can hit but not good enough to beat out the 3B. The Dh is the guy that has the best bat but not good enough to over take the other 8.
Coaches don't recruit RF's or LF's. They recruit baseball players. They do recruit CF's. They do recruit SS's. They do recruit Catchers and Pitchers. And they do recruit corner inf's who can hit.
If your a high school 2b there is a reason your not at SS. If your a high school lf or rf there is a reason your not in CF. The stud SS in high school may not be good enough to be the starting SS in college day one but he might be good enough to play 2B. The stud CF in high school might not be good enough to overtake the CF but he may be good enough to move over to LF or RF.
So what you end up with is former SS at SS, 2B, 3B, LF, RF in many cases. Former CF in CF. Former Catcher at Catcher. That is not always the case but in many cases it is the plan.
There are instances where a kid simply plays RF because the CF is a stud but he is also very talented. But many times its simply because he is not as good as the CF in the outfield. Your best OF plays CF. Your best infielder plays SS. Coaches recruit your best players. Your best hitter? Now thats where things can change in a good way for any player.