I'm surprised this isn't the top recommendation. Goblin and A Korean Odyssey are super similar. Both dramas center around women who have the ability to see ghosts, deceased family, are ostracized by society, and both have a fate that connects them to the male lead. The male leads are both eternal spiritual beings who are cursed, and only the female lead can free them. There are more and more similarities, such as the female leads being able to make the male lead appear anytime, demon characters, CEOs that serve the demons, etc etc.

They do have their differences that make each drama a unique experience respectively. If you loved one, there is a high change you will like the other.