still it falls into fanon that Ramna is effected that way
No Spok gave you a pretty good example of a very stereotypical feminine reaction Ranma had to a situation. That was canon. His interpretation of what that represented is what you can denounce or argue but you can't just say that's fanon. How do you interpret Ranma's reaction there? Why didn't he just deck the guy? Why did he run off crying? Your interpretation can differ but just saying 'not canon' isn't having a discussion it's just dismissing the argument.
You say the springs aren't mental for Ranma and his father just to name a short example. This is by it's nature impossible. Ranma changes into a girl. He has female hormones and a female brain. A female brain is differently wired then a male brain science fact. Estrogen causes different interactions and causes different emotions then testosterone science fact. Why then is it impossible to believe Ranma acts differently in his female form? You're saying then that Ranma really isn't a girl in girl form? Genma and the other animal cursed members all knew how to use their bodies near instantly. That implies at least instinctual knowledge is implanted in all their brains. The human body is not wired to walk on all fours or to fly. How then did they know how to use these bodies. You realize then that there are tons of implications for Ranma getting some sort of instincts too right? These are all questions you need to ask yourself before going, 'not canon'.
"Dark lords of Nerima" Claymade manages to keep a fairly canon character interpritation of Ramna through out
I like that story so don't take this as a knock against it but no. He doesn't. He takes Ranma and spins him into an extremely serious war. Things and people die. That is not canon Ranma or a canonish Ranma approach. It isn't Ranma becoming a girl but that's nowhere near the standard light Ranma run of stories. You can say with it not taking that run in his sequel that's up on this forum in C&C right now that he's doing so by not having those events affect the cast, but overall that story didn't feel like canon. Characters grew and had development and sacrificed, that's not a huge part of Ranma canon.
This does not make them bad, just non-canonical.
I can't see how you're even calling something 'canonical' when you're referring to fanfiction. By it's nature it's existence isn't canon. Saying something is 'in-character' is a far better phrase then 'canonical'. And really you can develop interactions of characters in different directions when given time and still be 'in-character', it's just as I've said before rare.