Just use levels fyi or glass door - the self reported salaries here will be the self-selected top of scale. And given how vague the question is the information you get here will be useless for anything but reinforcing whatever you already thought.
Larger companies do tend to get overrepresented but it’s also due to the fact that these companies hire the most and do actually largely represent the labor market.
I know how high salaries can get, I'm mostly wondering about the effort/salary ratio