Any where the male MC is a servant of a rich girl or princess and he's in love with her? She either is or falls for him in the end and they have to deal with the societal differences. Maybe she gets arranged to be married to some other rich person. The servant and rich girl end up together in the end though.

If not servant, just regular guy who is friends with the rich girl/princess is fine.

Like Hayate no Gotoku! (Servant x Rich Girl) & Nogizaka Haruka No Himitsu (Rich Girl x Regular Guy)

There was Komomo Confiserie from what I remember.

Inu x Boku SS ?.? 😀

"Bravery we all have it"

Teru Teru x Shounen did this premise pretty well.

Kanojo wa Mada Koi o Shiranai
Palace Meidi
Dance in the Vampire Bund? Tho I don't remember if there's any dealing with societal differences and the like in this one.
Kimi wa Midara na Boku no Joou (rich girl x regular guy)
Velvet Kiss (same as above)

Most master-servant relationship in shoujo with female MC have this kind of dynamic (opposing society, girl got arranged marriage with someone) with male lead usually upgrade himself to match the girl's status, like Ojousama no Untenshu, Renai Demo Classic, Joou no Hana, Koitsukiyo no Himegoto, etc.

DONDAKEE!!

Quote from bossmama

Kanojo wa Mada Koi o Shiranai
Palace Meidi
Dance in the Vampire Bund? Tho I don't remember if there's any dealing with societal differences and the like in this one.
Kimi wa Midara na Boku no Joou (rich girl x regular guy)
Velvet Kiss (same as above)

Most master-servant relationship in shoujo with ...

Thanks. I'll check them out.

Teru Teru x shonen - the male MC is a ninja servant. Very cute and cool. My fav mangaka.