EA seems to have quite a few examples of people who've counterfactually done a lot of good themselves in their lives (many of which are listed in the Introduction to Effective Altruism).
However, I haven't seen much analysis done on people who've helped other people do good with their lives. I suspect this is harder to measure, perhaps significantly so, but I think if there is any way to meaningfully speculate at this, that information could be useful for both EA movement-building orgs and individuals interested in promoting EA ideas or moral behavior generally.
I see two ways to think of this: people who've influenced a handful of people to become extraordinarily impactful, or people who've influenced a lot of people to do slightly more good (or perhaps less harm). I'm interested in both, along with any meta-level thoughts on this question.
The developers of websites like StackOverflow and Wikipedia, who made it much easier for people to spend time and energy sharing their knowledge for the good of others.