Recommendations

In both the ML is an animal (bear vs. cat) who appears as a human.
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Similar plot with reversed roles. Male lead is a ceo have a one night stand with the inexperienced female lead results in pregnancy

On both dramas female lead is strong, career driven CEOs, both goes into contact marriage, on begin again female lead breaks up from the male lead & gives birth secretly

Both drama and movie are based on the same true story about cheating on an international exam. Both drama and movie have won awards.

Both are short dramas in which the FL enters the world of a story and ends up altering the plot, sometimes intentionally. She also ends up falling in love with the villain of the story.

FL is murdered by the ML, returns/enters the world, and must try to change the plot in order to survive. Over time the ML falls in love with her. Both are short fast=paced dramas.

Both are short dramas with the same actor. In both someone enters the world of a story and must change things to survive which leads them into a relationship with the villain.

FL enters a novel and finds herself married to the ML, the villain of the story. She must change the plot in order to insure that her written death doesn't happen, and in the process the couple fall in love.

FL enters the world of a story (novel vs. drama), initially views the ML as the villain. The ML distrusts her at first but slowly falls in love with her.

Both are historical, funny, romantic, supernatural and mostly have same energy

Both are mostly light dramas with a similar feel. The FL is from another world and arrives in the historical/other one in the body of an "ugly" maid vs. "ugly" concubine. ML is royal in both.

ML is of higher status than FL. ML is a scholar, more weak/gentle type. FL solves problems within the family once she marries the ML, including helping his older brother's wife in her unhappy marriage. Similar vibes and tone despite being different in length.

They are both mystery/thriller with married couples. They both give the same vibes as both female lead try to clear their's husband's names.

-Both are republican drama
-Both have smart FL
-FL tried to get closer to ML with a bad purpose
-Both have a love-hate relationship story
-Both have the same main plot. It's about revenge

Princess! You have five husbands! Is obviously a reverse harem drama. I love it. There is some romance between two guys in her harem though.