ON that last point, I'd have to take that point away, because yes Jasmine did almost get her hand cut off for giving that kid an apple, but Mulan almost got sentenced to death for her actions. It was just Mulan's luck that the leader guy owed her a favor because she had saved him from certain doom, while he was unconscious...
So, probably already done, legitimate Disney Princess are:
Aurora
Snow White*
Cinderella*
Eilonwy
Ariel
Belle*
Jasmine
Pocahontas**
*by marrying a Prince they gain 'Princess' status (or would it be 'queen' status?)
** Tribe chief's daughter. A king is basically a super tribe chief.
including the *s I'd say Belle, because she lived in the countryside and just did what she felt like doing. Being independent doesn't mean she does things to empower women or anything like that. She's independent because she just did what she'd rather do without the need of a man.
Not including the *s... I'd have to say: Ariel. She took the initiative in her relationship with Eric. She sacrificed so much of herself to make that work. She knew the consequences she would face with her father, but stuck to pursuing her dream. Besides, how often do we see a Disney Princess making a literal deal with the devil (octopus witch)? Down to the signed contract?
And there are tons of actual Disney Princes. There are
The Prince (Snow White)
Charming (Cinderella)
Phillip (Sleeping Beauty)
Eric (Little Mermaid)
Beast (Beauty and the Beast)
Simba (Lion King)
Aladdin*
Flynn*
My personal favorite being Prince Phillip, since he fought Maleficent who was a fire breathing dragon. Also he actually helps the player out in Birth by Sleep.
Beast and Aladdin also help however Beast isn't very Princely and Aladdin is a likeable guy, but no prince.
Not to mention Simba and Aladdin are the stars of their movies. Both being the title characters.