I’m not sure how many players do this, but the contact point on the object ball is meaningless to me and I never look at it at any point before the shot. I see the shot, I see the angle required to make the shot, then I aim to hit whatever portion of the object ball I need to hit to pocket it, or aim completely full if it’s a straight shot.
For a considerable cut, I might initially go down in my aim with a half ball hit, aiming at the edge of the object ball, and then make fine-tuning adjustments, more or less than a half ball hit depending on the severity of the cut. On a shot that has a smaller cut angle , I likely initially start with close to a full ball hit, and then make the aiming adjustments off of full ball, depending on the angle.
After many years of playing, you subconsciously know the angles you have to aim the cue ball at to send the object ball towards the pocket. Of course it gets a lot more complicated once you are applying spin (calculating deflection and swerve) but that’s also learned over years, from trial and error.