Sorry for bumping up an old thread, it just seems like this topic was made for me (someone who loves the female characters in Mario games), yet I never posted here for some reason...Also, it can't be as bad as the 10+ year old topics that other users have bumped, right??
S Tier
Peachette: What do you get when you mix Peach with one of the cutest characters in the series? An even cuter version of Peach! Peach was already my favorite Mario character before, but Peachette is even better. I like her hair, bow tie, and dress better than Peach's.
Dixie Kong: One of my favorites in the baseball games and Mario Kart Tour. Wish she could've been added to Mario Kart 8 Deluxe and just appear in more Mario spinoffs in general...
Birdo: Underrated gal. I usually prefer her to Peach in games that they're both in since Birdo has less playable appearances.
Baby Peach: The cutest baby character (imo), and I will always support her in Mario Kart.
Cat Peach: I initially thought that she was a pointless addition to Mario Kart 8 as DLC, but she grew on me. Cats are really cute, and I like her anti-gravity trick animation.
Wendy: My favorite koopaling, and also one of the most hated characters ever...I always feel bad for these unpopular characters, so I support her and enjoy helping her win in Mario Kart.
Pink Gold Peach: I never hated her inclusion in Mario Kart 8, was really happy when she was brought back in Mario Sports Superstars, and enjoyed playing as her in Mario Kart Tour. She was quite useful there due to her Coin Box item, and I enjoy her lines/more cocky personality than Peach's. I like having her as a separate character from Peach because it means she has her own unique stats that are different from Peach's. Whereas Peach is a slow and light character in Kart and rather weak in Sports, PGP is a fast heavyweight in Kart and a powerhouse in Sports.
A Tier
Isabelle, Inkling Girl, and Villager (F): If crossover characters count, I did like these gals a lot in Mario Kart 8 Deluxe.
Pauline: She truly is a great character and I enjoy playing as her in Mario Kart.
Peach: I do like her a lot and is my #1 favorite from the main cast, but I usually only main her in games that have smaller rosters like in the Mario Party games. In games with larger rosters, I gravitate towards the other girls that are less popular and that are playable less often.
Baby Rosalina: She was my first main in Mario Kart 8 Wii U, and I think that she has the best lines/cutest voice clips out of all the babies.
A- Tier
Toadette: Was my #1 favorite back when I first played Mario Party 6 almost 20 years ago. I don't really know why I started to like her less over time...some of her animations can be a little annoying (such as her 2nd-6th place animation in Mario Kart 8)...like calm down, you hyperactive child.
Rosalina: I do like her, but she is probably the most well-liked and popular female character in the series which makes me want to play as her less since she doesn't really need the support...I liked her better in her first few playable appearances like Mario Kart Wii and Mario Kart 7 when she was voiced by Mercedes Rose or Kerri Kane, who actually did a good job of making her sound mature and unique. Laura Faye Smith turned her into a Peach sound-alike who yells "OOOH-WHEEE, YAHOO, ROSALINA!!!"
Daisy Tier
Baby Daisy: I did tolerate her for some time after I began to hate the adult Daisy since I couldn't deny that she is super cute, and well, I felt bad about about hating a baby character. I wouldn't say that I actually "hate" Baby Daisy since that's a strong word, but I'm not a fan.
(gap)
Daisy: Probably the most overrated character in the Mario series, or even the most overrated video game character in general. Or perhaps even the most overrated character in any form of media. For a character who did little to nothing of importance or anything really heroic (prior to Mario Wonder), she is disappointingly popular and has quite a large fanbase. And it seems that Nintendo also has a bias towards her as they usually make her really good in the Kart/Sports games, and she's been getting a lot of (undeserved) special treatment in recent years. Ugh, just why Nintendo??