Leaderboard

This.

Most pros, and streamers for that matter, seem to choose a sensitivity based on what feels right or what they feel works for that type of game. Take shroud for example, his PUBG (30cm) and Blackout (35cm) sensitivies are a lot faster than what he uses in CS (47cm) just because he's found that it works best for him. Anyways, it can be fun to compare sensitivities with pros but in the end I think everyone will agree that it's best to find that perfect sensitivity on your own.

I'm actually not sure, but if I recall correctly I read somewhere that some of the pros have very different sensitivity in different games.