So we mention every champion that isn't garbage at end game and put the word hyper in front of the word carry like its supposed to mean something when its already been cheapened to flame stickers on my rice burner car status.
I'd say the only one is Nasus really since if left to farm it doesn't matter what he builds hes dangerous and unstoppable.
Why don't we come up with a definition of hypercarry to work with first? It'd clear up a lot of confusion where some people are saying champions that scale well late game, some people are mentioning champs that snowball well, and others are trying to mention champions that can 1v5.
My definition of hypercarry would be champions that, once they are capable of carrying (ie fully farmed full build etc), are unstoppable. I would not include standard carries such as Graves since even with a full build you can still kill him.
So with that definition, I would name Jax, Olaf, Veigar, Nasus, Sion, Ryze, Vayne, Karthus, and Cass as hypercarries. Or at least as close as we get in LoL. They can't 1v5 against decent players, but since they'll have a team with them you don't stand much of a chance unless their team does not follow up or they make mistakes.