best top laner?

In low elo, as long as you're good enough mechanically you can "carry" with all top laners. Now, if we're talking about games where people actually know how to play around your pick, are able to farm without feeding and know what map awareness means (jungler), the "best" picks would be something that contributes to teamfights better (especially with CC+damage), which is key to winning the game along with getting objectives.

With that said, stuff like Camille, Ornn, GP, Illaoi and Malphite are at the moment some of the best top laners. :>