Remember tier lists are mostly opinion and up for discussion.
Champions are graded on multiple things:
- Scaling; How well they scale into mid/late game, but also how their early game holds up. Priority is mid game > mid-late game > early game > late game because of the snowball nature of Solo Queue, because of the importance of mid game, and because late game isn't always reached.
- Snowball; Top lane is by far the lane that snowballs the hardest. Give Jax, Riven,...