First chart is the "pioneer"--loaded 1st house is the giveaway. Moon and Jupiter in 4th indicate a beneficial family connection that helps with their line of work.
Second chart is the writer--MC in Gemini with Pluto (mystery) and Neptune (romance) in the 10th.
Both have Saturn in the 1st: lots of self-discipline. But the one I believe is the writer has a 1st house Sun too: the need to express him/herself is high here, and also perhaps the need to do his/her own thing, be their own boss. Good for a writer who has to work alone a lot and must rely on their own motivation and ideas. Plus 2nd house Mercury: making a living through communication.
The one I believe is the researchers has a 12th house Sun: less need for personal expression but a great need to explore, probe, delve down below the surface of things. This person identities him/herself as an explorer of existence, someone who can shed their ego and merge with reality on a very deep level. Comfortable with the unknown, perhaps prefers it to what is already known. A 12th house Sun in Scorpio indicates an attraction to riddles, puzzles, engimas and paradoxes. A person who likes to sort out mysteries. Seems like a good fit for a pioneering researcher--someone who has the motivation to go where others haven't yet.
I could say more but that's enough to make my argument, I think.