Recommendations

Both involve a dead person. Involves moving on after someone died. Both have romance finding love. Deja by is more angsty then I am sorry, I love you.

Although both dramas could be considered vastly different and have different vibes, there are similar elements.

1. Female leads who gain strength through diversities to reach their destinations.
2. Strong lead chemistry.
3. Second male lead develops feelings towards female lead.
4. Supporting characters who make unexpected sacrifices to aid lead female.
5. A bittersweet ending.

I recommend these dramas if you liked either of them. Princess Wei Young is slightly more romantic and typical historical drama while Bloody Romance is unique and stands alone from others I have seen while still having a similar love story.

Both stories involve a girl who ends up in a guys body and finds a love interest with this new appearance.

Although the story is different they do have a common element - Plara(LOL). Koo Za Rot Zab is about arrange marriage of the leads, Plara Song Krueng is about the FL changing her looks to prank the ML.

Both have to do with teaming up and uncovering the truth about their schools. Some actors/characters in The Gifted are in Blacklist (including the main characters, Nanon and Chimon).

Fantasy/ supernatural/ spirits/ friendship/ adventure. Martial arts & magic. Both dramas are worth watching and give similar vibes.

Hi My Sweet Heart and Devil Beside You are pretty similar.
-Both shows feature Rainie Yang as the lead actress in the romance story
-Both are slow paced, and use common Taiwanese phrases and dialogue
-Both feature the heroine encountering romances with several male actors

Hi My Sweetheart and Why Why Love have several common characteristics
-Both feature Rainie Yang as the lead actress with romance stories between several male actors
-Both use simplistic Taiwanese dialogue that is easy to understand and follow
-The heroine encounters multiple loves scenes between the guys she interacts with

Corner with Love and Hi My Sweetheart has multiple similarities:
-Both shows feature Show Luo in a romance with a lead actress from Taiwan
-Both shows use simplistic Taiwanese phrases and languages
-Both feature multiple loves between the heroine and male actors

Both are historical dramas formed around the theme of two friends fighting one another during a period of political change. These two former friends also have their eyes set on the same woman.

Similarity
* Both dramas have leads parent framed by rich family
* Both drama has the reward of punishing the Antagonist in the last few episodes

Similar Plots
* Leads Mother is murdered
* Deals about corruption and power

Not Similar
* Does not have a rich family

Over the Top acting, music and comedy. Both have been over-dramatized but that's what makes them enjoyable. Romance doesn't take priority in either. There is unlikely bromance in both.
Pegasus Market is in a corporate setting while Fiery Priest is more of a political setting. There is a serious tone to Fiery Priest while there is nothing serious about Pegasus Mart. Pegasus Mart follows a satirical storytelling while Fiery Priest is quite straightforward.

So far it seems like the transition and shift of dynasty similar to 6 Dragons especially with the mention of Yi Bangwon/Lee Bangwon (Jang Hyuk hyung). Hence I find Seo Hwi similar to Lee Bang-ji & Nam Sun Ho similar to Moo Hyul of of Six Dragons, respectively.

The romance in The Crown Princess is similar - with its very restrained noble love, "never step out of line before we're free to be together" vibe, but it's more extreme in the Crown Princess. Both involve court intrigue, military men, lovely costumes, and couples determined to put the whole kingdom before their own love interests. Crown Princess is a hate-to-love, but Legend is not.