I did have a look at your watched list and am not sure if any of the below will be to your taste but here we go anyway:
9 Ends 2 Out
Can we get married
Dal Ja's Spring
Down with Love
Dating Agency Cyrano
Hyena (underrated)
I Need Romance 3
Plus Nine Boys
Splash Splash Love
Soulmate
Stars Falling from the Sky
Sungkyunkwan Scandal
The Lover
The Producers
Witch's Romance
What's Up Fox?
There are also a few others which whilst not rom coms, I was surprised not to find on your list, given that you seem to like good melo's, psychological and suspense dramas so I hope you don't mind that I add those. They are ....
Chuno - History + Romance + fighting scenes
Que Sera Sera - Great Melo Romance
The Princess' Man - Romance + History + Suspense
Secret Love Affair - Great Romance
Nine Nine Times Time Travel - Romance + Thriller + Time Travel
Secret - Great Melo Romance
Punch - Great Suspense
It's Okay, That's Love - Some Comedy + Psychology + Great Romance
I hope you find some that you enjoy.
Luna