Who are some diverse champions that don't lose their use in higher elos?

I am currently a top main playing Darius, and from multiple people i've learned that he can run into a wall in about diamond elo where people punish him for his melle kit. He is pretty easily kited and had his strength if you can get your hands on someone, which is super hard if you don't burn your flash (even if that works, I hardly do it as I usually fail and barely miss my e) so I came to ask: what are some champions that, while they have weaknesses, don't have a huge disadvantage against one kind of pick. I don't know if that is alot to ask, as I assume anyone can be countered. But is there anyone that can almost never get countered if you play them well? A champ that rewards good skill? (and is fun? I mean Darius is powerful, don't get me wrong, but he kind of lost his charm. I played lee and he was super fun, but i'm probably too garbage at this game to play him well, lol. (I'm silver 4 if that helps anything)