League of Legends (LoL) Question: Trying Different Things

Ryze and Kayle are both solid top laners that are easy to use.
Lulu, Karma and Vladimir are also good and have pretty fun kits.
Nidalee and Jayce are more challenging but have a lot of mobility and are fun to play.

Ryze Lulu Kayle have all seen play in the LCS and at other levels. If you want a ranged top lane champion I would recommend trying those. Kayle got nerfed a bit though recently.

Jayce is another option and you can always play Teemo or even Urgot if you want. There are plenty of options out there, find something that works for you. Urgot is free this week so at least give him a try if nothing else.

Good luck. I'm not a great player so take my words as they are and listen to other people's advice as well.

i would say Nidalee Vladimir Jayce(both a good melee/ranged with good engage/disengage) Kayle(if you use her E she becomes ranged for a good amount of secs and her AAs does aoe damage) Teemo(but you should kinda know how to place your mushrooms, thats very important)

I've also seen some top Ryzes Lulus as well, but can't really tell how good they are.

Ryze Nidalee Gnar Teemo Tristana and I've also played Heimerdinger top ... oy boy I was daring the jungler to Gank me :D

Quinn can be good too, rush Blade of the Ruined King, Statikk Shiv you can get Frozen Mallet and Banshee's Veil for bruiser kinda build and then go Infinity Edge, for boots you can take Berserker's Greaves, Ninja Tabi or mercury's threads based on enemies.

Play Vayne against dem tanks. Succes guaranteed.