1) Le Blanc. *Can't play her to save my life*
2) Skarner *idk why. i just suck with him*
3) Poppy
4) Malph

Pretty much any champion that relies on skillshots (abilities that cannot target enemies specifically and make you target a specific point or area/direction) will have a generally higher skillcap than others

draven lb cass

Darius

Swain, easy to use and hard to play

use = use spells

play = land them correctly

EVE it is so hard to get a kill

Rumbles pretty easy to play especially top lane. W into person then q. If they dont want to exchange and start running then use e. Thats all it basically is for him. In certain times you can also straight line ulti in there path if there running to a tower.

Karma, Lee Sin(i'm going to get flamed on this one), Cassiopeia, Leblanc, Darius(lol jk)

Blitzcrank isn't "hard" but it takes getting used to. His Q can be difficult to master.