Yep, I agree with all those.
What it boils down to (when you reduce beauty to basics) is symmetry and proportion.
I studied this stuff as a young artist, because it's important for cartoonists to know.
I was intrigued as to why some people were deemed good looking by most of the population and some were not.
In cartooning, the slightest movement of a mouth or eyes changes an expression, or a character totally.