For example, Stephen Hawking is well known because of #1 and #4, and his medical condition helps make him memorable.
Neil deGrasse Tyson is well known because of #4. As a scientist he's just average, but he's great at talking science to the general public.
Richard Feynman is known because of #1 (quantum mechanics), #2 (Manhattan Project, the Challenger investigation), and #3 (Nobel Prize).
Joan Feynman's work has mostly been in areas that are just not that interesting to most of the general public. Interactions between the solar wind and the magnetosphere just do not excite the general public the way black holes and quantum mechanics do.
I believe they were mentioned in both Larry Page and Serge Brin favorite books.