In both dramas the males are the inferior gender, the female rule.
But Romance of Tiger and rose is not as serious as Ooku and is more comedic.

I rich dilusional jerk thinks no girl can reject him and he does what he wants with his money power. From extravagant parties to bullying the female lead.
Slowly the male lead while constently being rejected by female lead, falls for her and tries to get her.

Very funny scenes with a very confident female lead. She does what she wants and always gets into weird situations.

Mysteries surrounding the main character with mental issues and a big plot twist regarding main characters identity. Also tragic stories of supporting characters.

A Ghost and a detective investigate a murder case that has a connection to them both.
The Ghost Detective focuses more on the ghost world while Two Cops leaves it a mystery.
Even though The Ghost Detective seems a bit darker both dramas have comedy.
Both have a little of ghost romance as well :)

This drama seriously reminds me of Misaeng. The overall premise is the struggles of different office workers. There is also this at first misunderstood team chief (head judge of their department) who has tough time feeding and worrying about his family bc his character doesn't allow him to be promoted. He always scolds his hoobaes which gives him the image that he doesn't care, but he does a lot. The girl is a little different bc in this drama she is very confident from the start on, but both female characters have to fight female descrimination. Myung Soos character eventhough youd think he is the opposite of Ge Rae, still resembles him very much. Other judges don't like him and he continuously searches for the best way, the most right way while questioning his own thinking too. There is also this co worker who is all fun and socialable and you think he has no problems in life when in reality he struggles too but always works hard to lift up the mood of the group.

Both dramas have a similar setting/Period they play in. Both female leads aren't push over and seek revenge on the country that destroyed theirs and the enemy that appearantly killed their loved once but evetually both female leads fall in love with the royal of the enemy country and become concubines now dealing with the jealousy and intrigues of the Harem/court.

A character that has to get married but don't want to comes up with a plan in introducing a fake 'fiancee'.