OP did it best in the first post as far as visual examples
-*snipped text and images*-
I already went over that information, but, thank you for the effort. A few examples I elected to share are here and here.
Anyhow, from my point of view, there is no joy in the idea that - apart from the Aquatic Elves and Avariel, who both possess differing anatomy that is distinct even from a distance - all of the elves (Sun/High, Moon, Wood/Wild and Dark) are only superficially different from one another. Naturally, there are some unifying features between them all and there is always the possibility of exceptions to the rule ("Goodness and stars above, are you certain you do not have ancestors from Evermeet?", he said to the curiously blushing drow.), but to say there's no real variation otherwise? That is the path of least resistance. I prefer the journey of a thousand miles which begins with a single step; enough effort poured into the little details is what makes a piece of art endure.
