these dramas both have similar themes to each other
trauma, family and friendship to name the main points
both balance the heaviness of the subject matter with breaks of light-heartedness (more so in IOTNBO) and humour.

-Both involve trauma
-Spoiler from episode 2 -Both FL have trauma that affect their work.
-Both have a story line based around at least one doctor
-Being sent to run down / remote hospitals

They both deal with a profession that's unique in a way (one being on a ship another in a railway station)
Both male leads have a similar story.
It's been a while since I've seen hospital ship so I dont wanna say anymore comparisons incase I'm wrong but catch the ghost is certainly worth the watch if you liked the ML in hospital ship

-Both involve a disaster
-Both have a theme of the importance of family
-Both dramas have a nice male lead who is somewhat selfless
-Male lead of both have poodle hair :)

SIMILARITIES
-Both include supernatural elements
-Lee Seung Gi plays the male lead in both dramas
-Love between a human and a 'supernatural being'
-Both set in the past (a Korean odyssey shifts into the past quiet a few times whereas thats when Gu Family Book is set)


SIMILARITIES AGAIN BUT INCLUDE SPOILERS:
SPOILERS:
-Both tragedy at the end.


SERIOUSLY A HUGE SPOILER FOR BOTH DRAMAS:



-A main character dies at the end of both dramas.

-Both deal with injustice toward women, Witches court more so than Miss Hammurabi.
-Both deal with law - Miss Hammurabi in the pov of judges and Witch's court in the
pov of lawyers.

Both dramas have a male lead with a strong memory
Both about lawyers
Both are great dramas in my opinion
They may or may not be more similarities , its been a while since I've watched remember war of the son and I have just started re watching suits.

You're All Surrounded is a bit like WATCHER [currently on its 4th ep] due to the themes of:
-Corruption in police,
-Both male leads join a team in order to find out the truth.
{MINOR SPOILER} - Murder of parent [from ep 1]

They're different in the fact You're All Surrounded seems more upbeat in parts and has a balance of romance, comedy and psychological elements whereas so far watcher seems much more focused on action and psychological elements.

So in conclusion if you liked you're all surrounded due to its psychological elements you may enjoy WATCHER.

Both have a body switch experience.
Both have 'cheesy' comedy.
Both switch between a high school student and an older guy.

Both follow the life of a teacher who goes from a city environment to a rural village to teach and help the kids find their dreams.
The teachers mature in both dramas and you can see their character development.
My Dream Class is a more updated version of My Teacher, Mr. Kim but both are unique and different enough to enjoy their story's as separate and i feel like each excel at different aspects.

Both of them follow life during the korean war between soilders and citizens/kids.
Both use a creative outlet ,
Swing kids uses tap dancing.
A melody to remember uses singing, choir.
Both also don't use romance to overshadow the story.
Theres a lot more similarities but not many i can give away without spoilers but both movies are amazing and worth a watch.