To answer your question: there are no answers satisfying your set of requirements. An extremely small minority of individuals will end up achieving notable outcomes fulfilling more than one of the requirements above, but even among those, very few will have been as a consequence of following abstract criteria, as opposed to focusing on opportunities appropriate to the individuals' strengths and taking up appropriate challenges as they come along.

It would help if you relaxed your (radically American-elite centric) set of requirements and instead focused on the following few questions:

- What could make you happy/fulfilled on a very personal level (very few people make any impact when unhappy)

- What could make your family/community happier? (very few people manage to persevere without associates or without a support system)

- What is a project you could grow to do within a year or so that would have a positive impact on the greater good you have in mind? ("the world" is a large place).

Having done a few startups, including one that may change how humanity treats cancer (via computational immunology; very few problems are SW alone or even mostly SW), there bulk of impact is gradient ascent: baby steps and finding people to collaborate with. Also, adopting a bit of perspective outside of my community definitely gave a boost.