I'm not sure I'd call
"edgy" or "chaotic". Have you read his lore, or listened to his lines?
He's about as good as Runeterra gets.
being the only person I can think of who is more "good" than Yorick.
His only purpose in his reluctantly immortal life is to kill Mordekaiser, and end the curse of the isles to save Runeterra from 2 of it's 3 greatest threats. (The other being the Void.) He could have just given in forever ago and died. But through force of will, and his own morals he refuses to give up, or die until he's put the isles to rest.
What about that doesn't scream "hero"?
I mean sure, he's using the curse to end the curse, but he's not chaotic or edgy, he's just scarred and driven.
Also, I'd say Lawful-good champs SHOULDN'T be a thing. You can be a goody-two-shoes, but no actual person is lawful good 100% of the time. If you want a complex and compelling character, you need to write them like an actual person.
This isn't required all the time, but unless you're writing a character to be an unrepentant killer
or an ancient evil looking to conquer the world
, it's best to write the character like a person.
Think of it like this, who is easier to relate to? Superman, or Batman? Iron Man, or Spiderman?
Making someone human makes them relatable. Making someone relatable makes people care about them, makes people get invested.
Lawful Good and Chaotic Evil characters are not relatable. Evil characters are at least entertaining to watch, while no one cares about a goodie-two-shoes saving cats and walking old ladies across the street.