Well, I was a child rather longer ago, so keep that in mind.
I mostly liked male protagonists, but most of the protagonists I read about were male. Among females, I kinda had the hots for Clarissa Kinneson, and her daughters. I found the male Kinnesons a bit hard to take. (Of course I liked Nadrek and Worsel the best of the Lensmen, and I don’t think Nadrek had a sex, and with a thirty foot long flying lizard, the question is unlikely to come up.) Podkayne wasn’t my cup of tea, but Girdle Fitz-Snugly was cool. (I really liked Holly Jones too.) Hazel Meade is my kinda girl, although eventually Minerva Long became my Heinlein favorite.
I don’t recall any really strong responses to other female protagonists from my childhood. As I said, there were not all that many. I didn’t like the House on the Prairie books, and never even finished one of them. Dickens heroines were nauseous. Nancy Drew just wasn’t heroic. Just a tattle tale with a good mind and a sharp eye. Nothing for me to find really attractive. Good female protagonists mostly came later, after I was already an adult.
I could take or leave Menolly, but Lessa tripped my trigger. And Helva was nothing but cool. (I was much older than a child for most of Ms McCaffery’s career, though.) Rhiannon was really a tough chick, but man, Celtic tragedy is really tragic. I couldn’t even begin to identify with being around her. Tolkien’s women were all to be loved from afar, and I did. I liked Goldberry better than Arwen, and both of them more than Luthien. Galadriel was another tough babe, and I like tough babes. She was just a bit too mysterious for my tastes, though. Ayla was too good to be true, although I really liked her foster mother. (I don’t know if the whole Neanderthal thing would have been too much for me.) Talut’s old lady was way cool, too. (I forget her name.) I don’t think I would have been able to take Sophie Aubry’s company for more than an hour or so, and although I would have probably really liked Diana Maturin as a casual friend, I have no respect for her, after her actions with respect to Bridget. Clarissa Oakes probably would have been my best friend of all the O’brian women.
I really liked Queen Lucy, the Valiant. Never much cared for her sister, even in the first book. Polly was the sort of girl you can be best friends with, even if you are a boy. I wish had read those stories as a child.
Well, I will probably think of dozen as soon as I hit submit, but I ought to stop somewhere.
Tris