both happen in a rural place where everything is less hectic than the bustling city, and both female lead's kinda moved back to their childhood home to get away from it all..

in the simplest similarity Hae Won is/was a teacher kinda like Ha Neul and there seems to be a backstory, but otherwise both have that cold cozy healing vibe

Hi Bye, Mama! and Wonderful Nightmare have that reincarnation trail theme and both in the end are heartwarming family genres

in Reknow we have Lay going to America and trying new things, just like how EXO went to Taiwan.
Also we get to see Lay learn how to surf, just like how Chanyeol and Chen did in EXO Ladder ;)

if anyone wants to see our beautiful strong female lead Kim Da Mi in another equally good project they should try The Witch: Part 1. The Subversion

My Holo Love was like a fantasy sci fi vr of Her Private Life? like if you combine all of the dramas in the recommendation, you'd get My Holo Love xD

Possessed had the best potential for the evil spirit drama, and they both share that same feel.
also they both have a female character that has "special powers" needed to fight the evil spirit

they both have that movie like quality, they both have Choi Byung Mo, and a dark vibe that walks on the gray line of what's good and what's bad

they are actually the polar opposite, but I started The Cursed because of Uhm Ji Won's acting in STTS, and her character here is like a combination of lee bom and bomi.
also, Choi Byung Mo guest roled in TC and he's character was slightly like STTS ;p

both Black Dog and Just Between Lovers are similar in their slow and healing nature, both had that cold blue vibes

both Keys to the Heart and Cheer Up, Mr. Lee are similar with the same kind of family bonding/touching story

both have Jang Hyuk and a female character with "abnormal" abilities. both are great quality mystery thrillers