My all-time favorite is the 'I like to be left alone!' style, though I didn't even know about it until I found it accidentally like.... a year into my first town lmao. I can't even remember what my hair was before, but I've kept my mayor's hair in that style ever since! It's also the style I have in PC.
My second favorite is the "it's a date' style. I just really like the bangs lmao.
Unfortunately, a lot of the other hairstyles all look really similar to me.
My favorite hairstyle is the thirteenth female one (Extremely Formal > Business! > Fresh!). For my male characters, I usually use the first one (Extremely Casual > Loose and Wavy! > Laid-back looseness).
I think that the bow-shaped hair is so unique, it's by far the my favorite hairstyle/wig in the game right now! Hopefully they keep it in AC Switch whenever it comes out!
"i like being left alone" in a brown-ish shade and "i'm a role model" in light purple were my go to styles but lately the "i like to style my hair" one is growing on my because it looks so? put together? polished? it just looks really good with dresses and stuff! sometimes i get the guy's uhh mohawk thing just to mix things up and i like wearing the suits with it for the contrast?