Yes, but it's not so black & white as being only comprised of ugly and beautiful people. I think confidence, career, skills and your societal status all come into play when it comes to dating leagues.
Like, let's say for example, there's an ugly guy who is pretty boring and doesn't really have any ambition, he just wants to remain how he is, and keep on living an average life. The guy is attracted to a beautiful girl. This girl doesn't only look great, but she has tonnes of friends, goes to all the greatest parties, and has a really exciting career that she's super-into. I'd say that ugly boring guy stands the exact same chance with her as he would if he were better looking.
Of course looks matter, but they only represent a a portion of what makes up a league. So even if you are a painfully average looking guy, if you lead an interesting life, and are good at talking to people - you'll still stand a chance at getting with a girl who is miles better looking than you.
I use to think, "no", but now I think "yes" because it is more of a compatibility thing. It's not like you can't be in that league if you changed, but I think it is important to be true to oneself, so they can be happy and someone can love them for who they are.
I would say there are leagues. Poeple who think too much of themselves and think they're popular, but are actually hated are one league. People who think much of themselves and are popular are another league. People that try to be popular, but fail are another league, a league where usually only poeple in that league can date each other, nobody else. People that don't care if they're popular or not, though they'd like to be a little, and care about the inside, not the outside are another league (I'm in this league). People who don't want to be popular whatsoever aren't losers, they just don't want to be popular. People that are geeks are the last league, and they're losers. I might be wrong, but . . . this is just what I think.