Actually, all these characters (Makoto, Ranma's Akane, HerWorldoes and Fighter's History's Ryokos, the manga Yawara!, countless others) are all derivative from a real world person. https://en.wikipedia.org/wiki/Ryoko_Tani
Then the trope evolved from one character to the other.
The trope might have evolved but Makoto is almost all Akane, all the way to her personality traits, things she hate, back story and even the yellow-ish gi instead of the standard white one. Even her super arts has a lot of Akane in them.