Everything Tarma said above, I agree with. I would like to add to it, though. My additional comment gives kudos to Slughorn, which I think he deserves but seldom receives. He's gifted at telling the two kinds of popularity apart, and after he's certain he's found someone who is genuinely talented, he makes the connections which will help them succeed. Not that genuinely talented people won't suceed without him - many do (but not all do) - but he gives them a leg up, and he gives a head's up to the departments who are an excellent match for the skills. This is why people are so grateful to him they give him free Quidditch tickets, etc.
One character from this book who i think may fit both categories is Ginny Weasley. Fred and George comment on her dating life, and I get the impression that she, like Fleur, is someone males find attractive. Possibly it is do to her appearance, but whatever it is, it seems to have really made her popular. But we see that Slughorn noticed her for her Bat-Bogey hex. He thinks she has the potential to excel in life, or he would not have invited her into his club.