Best top laner?

It depends on how much you dedicate to the champ to learn them

All picks are situational. I suppose Gnar would be the most situationally stable, but also the least situationally superior. Irelia and Darius have clear strengths over one another that would allow them to excel depending on team compositions and required traits for their role.

My answer to you, unfortunately enough, is it depends.

Irelia.

they're all solid picks right now. irelia and darius are easier to play than gnar though.

gp hes somehow also the best mid laner

Depends on what you are trying to do.

But GP has a higher play rate, lower ban rate and higher win rate then Irelia who is marked as the second best top on champion.gg