1. Sarada: She is fairly complex, with a complete arc centered around her. While the two main protagonists (Naruto/Sasuke) are each relevant in the arc, neither overshadows Sarada's own development, and she ends up becoming her own character after meeting both of our main "guys."
2. Tsunade: She is allowed to be a badass in her own right. She represents the Will of Fire on behalf of all of the (male) Hokages who came before her, and did so proudly.
3. Sakura: Despite all of her shortcomings (many of which reflect badly on Kishi's ability to write female characters), Sakura happens to be one of the more developed female characters in Naruto. If you "read into" her character development, she can seem fairly complex. Even though she never reached the level of awesomeness that her male Team 7 counterparts achieved, this can be chalked up to the fact that she wasn't an Ashura/Indra descendant. She didn't have any Bijuu/Doujutsu, and yet she fought beside her comrades, even against Kaguya. Honestly, she's fairly impressive in combat, even if her inexplicable infatuation with Sasuke was never fully developed.
4. Kushina: She's just a fun character; seeing her made us instantly recognize where Naruto got his personality/charisma. She's tough, upbeat, and has more guts than any of the other girls in the series. It's too bad Naruto never fully inherited her badass Uzumaki genes; those chakra chains are cool!
It's too bad that Kushina was reduced to being a housewife in all of her later panels; I think Kishi just goes overboard portraying his ninjas' "off-duty" life as being too casual, and so succumbs to forcing his characters into his perceived "traditional" modern day roles. Hokage Naruto types away on a keyboard; Sakura has an apron and a feather duster; basically, the characters cease being ninjas as soon as the plot no longer requires them to act as such. I guess it's not so bad; there's nothing wrong, per se, with being exclusively a stay-at-home mom... it's just that many of us fans would prefer to see "respectable" female characters in more "dignified" roles, even "off-duty." In the end, Kushina still died so that Naruto could live, and was able to restrain the complete Kyuubi even after having the Bijuu extracted from her; that far exceeds Naruto's capabilities after having the Bijuu ripped out of him by Madara.