levels.fyi has been of good use for the industry at providing tools to navigate the incosistencies with leveling across companies. Somewhat similar to what Leetcode did as well (not saying Im happy with the standard).

There's a lot more refinement that's needed for levels.fyi data:

1. Data goes stale pretty quickly. Salaries are on a downtrend now and many averages don't reflect it yet.

2. Data is overreported in the few popular reigons and companies. Bay area/FAANGetc

3. Values are inflated with stocks that aren't public companies.

4. Lots of companies are following weird vesting schedule now and that calculation isn't the simplified 4 year average of stock value.