Looking at my typing speed guide..
it would seem that hands do not rest naturally on asdfjkl;, they rest on awefjio;
for q and p, depending on what technique you use, resting-wrist or hover-wrist, you may choose to use ring finger instead of pinky..
For hover wrist, because you can move between the keys really fast, it doesn't matter what finger you use..
For resting -wrist, wrist on the table why typing, THEN, it's easier to use Ring-Finger for -Q- and -P-, because using the pinky is much further away.