Best role for carrying in each division?

Would like some community help on above what I am qualified for. Pretty sure each set of divisions has its own roles that can carry harder than the rest for handfuls of reasons. From what I have noticed:

Bronze: Play mid. The ability to simply outplay your lane opponent and roam, because no one will buy wards will lead to snowballing lots of lanes. Silver: ADC most people through silver in my games avoid bot lane so should you master it you will outplay and outcarry the other bot lane. ADCarrys shouldnt be 10/0/5 at 20 minutes, but in about 25% of games there is one. Gold: Jungle. This appears to be the elo where being smart starts to pay off. Finding gaps in vision and coming in for well timed ganks / counterganks while knowing that your laner will actually commit to a gank lets the jungler start to take over.

I havent been to platinum or above yet so would like some help finishing post, but I spend a lot of time in the other tiers.

Not saying the game should be this way, but if you want to start moving up in divisions start playing them when you need to.