Is there any drama that has a reverse harem like Cinderella and the four knights but done better?
Try:
Thank you everyone.
You might like Atashinchi no Danshi, though it's not as romance focused as Cinderella.
Hajimete Koi wo Shita Hi ni Yomu Hanashi
If you are referring to dramas where the FL has more than one male interest
Sound of the desert
Imperial doctress
Meteor Garden
Boys over flowers