Both have a very similar plot in which the ML hires FL to be the long lost granddaughter of some super rich guy. My Girl is a Korean classic, while Taking Love as a Contract is a low budget minidrama that almost seems like a remake due to the similar premise. The endings, however, are different.
They both have a similar comedy style that involves supernatural creatures and monsters. I hesitate to call them horror, but if you're looking for some light horror comedy, both are great dramas for it.
Both dramas have a similar concept in which the FLs leave their busy and stressful city life by coming to a remote area to find healing and inspiration. Meet Yourself has a bigger budget and is focused on tourism. While Be Careful Delicacy has a lower budget, it stands out with its cute animation and focus on food. Both dramas can be pretty relaxing.
Both have similar storylines involving an "old man" returning to the workforce in an entry level position. They have to deal with a generational gap and becoming up to date with new trends, technology, and a new workstyle. In Unicorn ni Notte the old man is more open minded, willing to learn, and try new things out whereas the old man in Kkondae Intern is a bit stuck in his old ways. They go through a considerable amount of growth by the end.
Both introduce you to the world of sumo wrestling. Sanctuary Seiiki focuses more on the old traditions and pro level sumo wrestling. Shiko Funjatta is a lighter drama that focuses on the sport from a modern sport perspective on a collegiate level.
Both cover artisans who are a master of their craft. Hi Producer is part drama/part documentary about artisans that are trying to preserve the tradition of their craft. Masters in Forbidden city is a documentary about artisans who work in art restoration. If you appreciate the art in one, there's a good chance you'll like the other. There is a shorter movie version available of Masters in Forbidden City.
Both involve ML playing the long game in revenge by calculating it over multiple years. In both, ML assembles a group of allies to help him achieve his goal. Both have great OSTs.
Both are forced marriage lakorns due to some misunderstanding. FL ends up working on ML's farm in both. Both dramas land under the slap/kiss genre, but Jao Sao Jamloei has a softer take on the slap/kiss genre. Both have ridiculous drama scenarios that are pretty laugh out loud worthy.
Both male leads are heirs to a traditional business that involves wearing traditional style of clothing. Both have a psycho female character pulling the strings. Both female leads have to navigate working the ins and outs of the business. Promise Cinderella is more of a romantic comedy while Watashitachi wa Douka Shiteiru is a little bit more of darker revenge.
Both are Chinese business dramas that have a very talented female lead, who is exceptionally good at her job and crunching numbers. In both, the male lead and female lead have a senior/junior relationship as well as somewhat of a mentor/mentee relationship. The Ideal City has slightly more romance, but the relationship in both start off somewhat platonic.
Both are dramas about real estate. You get to see some really cool houses and properties throughout both dramas.
They are both variety shows about dads watching their daughters date and reacting to it. Both have 4 fathers as the main cast.