I would say Princess Muna and Queen Noor.
Princess Muna for the reasons already mentioned above. She totally adopted and fell in love with her country and remain devoted to it following her divorce. It couldn't have been easy to see King Hussein move "on" so to speak with two following wives. But for all intents and purposes (we dont know the specifics of her life) they maintained a good relationship, raised great kids and managed to remain friends.
Queen Noor for the same reason, she totally took to her new country and her family. It couldn't have been easy being a young girl, marrying a King who had been married three times previously and had a rather large family. I am sure there are things that she wished she could have done differently, but nonetheless her children have turned out pretty okay.
I would also agree its hard and little unfair to compare Queen Dina and Princess Muna since the relationship between the press and royals were totally different when they were the wives of King Hussein.
Furthermore (and not to offend) Queen Alia is in a different category. They weren't married very long and because she died so young, she will always have the aura of unfulfilled promise. Simply put, we don't know what she would have done. Like many who die young she has become a myth of beauty, youth, love and thoughts of what might have been.