How much do these roles pay? If they do not pay salaries at the same level that someone with those skills could make elsewhere, that means that top talent might not go to these roles unless they happen to be effective altruists, which seems unlikely. I've read a lot about how EA is no longer money constrained, so if these roles do not pay very well, is that actually true?
How did you make that graph? A Python library? It looks really nice!