I haven't seen any articles related to the topic, but it looks like Yoshika is most popular among female fans by ratio (according to 2025 results, as for some reason I cannot see details for this year results). Next are Seiga Kaku and Tojiko. Only after them go Miko, Mamizou and Futo. I really wonder, why these ones are the most popular among female fans. (I also think it may be a good idea to sort all character by total number of votes by female fans and by ratio to see which ones are the most popular)