Most Helpful Guy
I don't know much of the josei genre to be honest, but two that
I do know, is "Hana Yori Dango" and Chihayafuru.
I actually watched the drama version of hana~~
so I can't speak much of the manga, but the reviews
are supposedly pretty good.
Chihayafuru is both manga and anime.
Hana Yori Dango, is both manga, anime and drama. ^.^
Most Helpful Girl
Kuragehime (fashion, romance, coming of age)
Paradise Kiss (fashion and romance)
NANA (music, fashion, romance)
Honey & Clover
Aoi hana (Warning: it's yuri)
Wandering Son (manga and anime dealing with gender identity)