Both has Jung Kyung Ho with long lighter coloured hair acting beside Park Sung Woong. Both WTDCYN and Daemuga has supernatural stuff going on, WTDCYN has more fantasy freatures and less shamanism than Daemuga and also is a show not a movie. In WTDCYN Jung Kyung Ho's character is (morally gray?) protagonist unlike Daemuga where he's the main villain.

Very different stuff but both has really good scenes with shamanism and great acting. The Guest is show and Daemuga is movie

Girl VS psycho killer.
I think Missing you is much darker than Midnight. Also one has happy (in some ways) ending and one does not. Great acting in both.

Very strong bromance moments you'll absolutely love in both.
Lots of action and comedy in both.
Brain works is more of medical/science crime drama and Man to Man is action comedy

In both there is ML that has insane self-healing power. Aside from that they're very different. Connect is dark crime drama and IATYYATS is romantic comedy with mystery twist.

Although they're very different Bargain reminded me of Sweet home because of similarities in visual feeling, setting in building (people are stuck inside and trying to survive). Also both dramas are very action packed but I'd say main difference is that Sweet home is trying to show that there is bad in people but there is also good and hope in them. In Bargain characters seems just like really trashy human beings.
If you enjoyed Sweet home you should try to watch Bargain.

Very different story but I was remained of Seobok while watching Alienoid. Both movies are sci-fi, has non-human main character, special powers, action and in both are parent/child relationship but they're not actually related by blood (in Alienoid it's Father/daughter relationship, in Seobok it's not entirely family-like relationship but I got fatherly vibes from their interactions)

-In both there is time-travel from past to future and back
- ML being in awe of modern technology and kind of awkward
-Both is very funny
-LUTYN is more of medical drama and is heavier on the romance

- time-travel
- male lead from past travels to present day
- male lead is like fish out of water and acts weird in the present world but people comes to like and admired him anyway
- it's funny