So it's been said but is my case.
The strongest out of mines is middle.
The most beautifully sounding is index.
The most controllable is also index.
So my ring is quite auxilary, and I am hesitant to employ.
I don't know if it helps, but I also play and learning flamenco, where i and m are more important, especially for fast single lines, which is called picado (and excluding lasgueos where all five fingers are involved).
It may help if you get down on some picado workouts.
BTW the most useful in picking nose is pinky, with extra nail length for lasgueos
Jokes aside I also noticed that the above difference is not so much audible to the others when I play. It is highly likely that the difference is based more on player's own awareness.