I have a 17-year-old son who has already taken his first steps in the dating market, but...
I would not attempt to establish any sort of rating system for his use. Certainly not a rating system which supposedly has any sort of general applicability.
(Personal preferences play too much of a role.)
Rather, I would instead advise my son to keep an eye open for certain "deal-breakers."
Assuming you even have a group of "possibles" from which to choose, it should be a relatively simple task to "winnow" them down by applying a few, generally valid "knock-out" criteria.
The most-important exclusionary criteria would pertain to attributes which are not even visible (e.g., slootiness /illegitimate children, conceitedness, etc.) - and young men are essentially visual creatures (unfortunately).
Visible criteria would include obesity, massive dental braces, severe acne, etc.
But if I were a father advising my son on selecting a wife, physical attributes (as long as they don't preclude fertility) would be of diminished importance. (I know: Good luck trying to convince a strapping young man to "go" for the inconspicuous but serious, principled wall-flower!)
In my early years, I was probably what could be described as "hunky" or "hawt" (though I was socially awkward). Still, I had extremely strict standards concerning physical beauty. As a result, I "dated" only stunningly beautiful women.
I think that I would have "gotten more" out of "dating" and experienced more personal growth and maturation, if I had been less fixated on mere outward beauty.
Rating systems are probably okay for the dance floor, when trying to make a quick estimation from a group of total strangers, but if you are selecting from a group of people with whom you already have some at least slight acquaintanceship*, I would advise approaching the matter differently.
Regards,
*And, ideally, this would be the norm.
The rating system is a “shorthand” for what our minds do anyway.
We are always evaluating other people even if we are not consciously thinking about it.
There were periods in my life where I was a “creep” in women’s eyes and other periods in my life where I was considered “hot”.
The manosphere taught me that it was a choice—if I made the effort I got the rewards—no short-cuts.
(The funniest thing they did not teach me is that once you become “hot” you have to run away from lower SMV women—they will make total fools of themselves to try to get your attention.)