cait certainly is a hypercarry, her damage scaleing come to lategame is huge since the update, and her huge range+savety allows her to constantly hammer away on her opponents. At 5-6items, cait is one of the scarriest champos to fight, if not the scarriest due to how damn save she is if well played
Also, i'd consider Ashe an hypercarrie. Between the passive and Q, she has some massive steroids, good range, and her utillity gets very scary in the lategame.
And both have a clear increase of winrate the longer a game goes, prettymuch perfect hypercarry curves, starting off weak and getting consitently strong as the game progresses.
Kog for example starts of strong now, drops slightly at 25min, spikes at 30-35,in, and when falls off, actually haveing his weakest point at 40+min