Thank you all and as I continually assert, I am simply attempting to get beneficial and straightforward methodologies exposed to those of us who may need them.
Nice pictures Unclefudd they are very clear and expounding. I never got the hang of the support hand being up that high, of course that is a personal issue. Essentially my grip, one and two handed, are those depicted below from “Shooting to Live”.
The only variation is when I am shooting revolvers by right thumb is curled somewhat downward as on my (single action) automatics I have the safety to contend with. These I have found most natural for me and it is how I grasp the weapon instinctively so I tend to stick with them.
Personally I feel the most significant elements of a proper grip are; a) its relative ease for the shooter to acquire and b) the “pointability” or, as stated in the original post, the natural point of aim of the grip/weapon combination.
Here’s a further description of the grip I tend to use, from Matt Temkin’s “Point Shooting Lesson Plan”
3) How to grip the pistol. Place your finger on the trigger, on the first crease, and grip it until it shakes. This is the convulsive grip as taught by Fairbairn. The handgun should now be in perfect alignment with the Y of your hand. (See pages 107 and 129 of KOGK).
P107 
P129
Additionally, I feel that some instructors were, for many years, too rigid and structured in their lessons. Granted, there are certain absolutes, such as the 4-rules, however a certain amount of individual variance should be applied in areas such as stance, grip, et al. Lest we forget that, in actual combat, we may not have the opportunity to attain the perfect grip and stance.
On the contrary, an individual shooter may not necessarily know what is best for them until they are proficient. Many times a simple adjustment in the shooters grip makes a world of difference in their accuracy as you expounded upon Unclefudd. My hat is off do you gents and ladies whom are instructors, you have both a difficult task albeit a rewarding one.