LCS wants to pick more early-game teambased champs, and most of the ranged top laners don't really fit that.
Lissandra does, which is why you occasionally see her picked.
Quinn has early game but her teamfight is crp.
Gnar was picked a LOT, but Riot nerfed him as a result. He's still great cuz of his mega ult.
Teemo has no teamfight
idk about Graves
Kayle isn't the best teamfighter. She's more of "im the solo carry, get me fed and I'll kill everything." She just offers mostly dps (besides her ult). Not as impactful in teamfights as Shen, Maokai, or Naut.
Morg supp is generally better than Morg top
Jayce's teamfight is weak, because all he can do is poke with QE (and maybe go OOM because people don't get tear on him anymore). He can still blow people up, but, because he's squishy, he's just as susceptible to being blown up himself.
Lulu got nerfed out of solo lane, but if she returned, they'd prob pick her. She's supporing rn.
Vayne is another weak teamfighter, but her dps is great. It's like Kayle.
So what does LCS pick in top lane?
Shen's ult is really good for team LC$ plays.
GP's ult gives him global and teamfight presence, as well as scaling well. His ult's great though
Gnar is still picked, but not as much as he used to be. Great teamfight changing ult.
Liss's ult can either save herself or take an enemy out of the fight for a few seconds. She also has great AoE utility
Vlad's AoE Ult. I forgot to mention him on the list of ranged top laners earlier
Rumble's AoE ult.
Maokai's ult and lockdown
Looks like Illaoi was picked once, and she's a great teamfighter for obvious reasons
I forgot to mention Ryze earlier as well, but he has his ult, and is oppressive to lane against.
The exceptions are: Fiora, Irelia, Jax, Trundle, Olaf, Camille
Camille was just THAT good at the time.
Trundle's an anti-tank, so he's probably a counterpick.
Fiora, Irelia, and Jax.