Thank you for opting for “overlooked” and not using “underrated”.
Maybe there are less famous people, but I think that Richard Feynman should be better appreciated. Reading his books taught me how to approach problems, both from a “how to ask” perspective to “why is this not really the question.”
You want everything just handed to you or what? You’re asking for cheap, best, and easy. At some point you need to decide what your goal is and accept that you’re going to have to compromise.