The plot is very well written and unique in both of them.
The Main leads have a very healthy and mature relationship.
In LR, the ML loves the FL for a long time while in YAMG the FL is the one.
In LR, FL faces work crises while in YAMG it's the ML.
Both main leads are career-oriented.
Once they get together they are lovey-dovey and deal with their problems.

Both of them have unique ways of getting along.
They are not being draggy.
They are mature even with fights and no misunderstandings that last forever like you're interested from the get-go.
Side couples' love stories are also nice.
Both MLS and FLs are strong and career-oriented

Both have strong female leads who are princesses who do their utlmost to guard the country for the people and peace.
ML in both of them are generals with loyal brothers whom they go through everything.
In TLB FL cross dress knows martial art and war strategies but in TRP the FL doesn't know how to fight but use the other way as a wangfei of the ML to deal against enemies and her status as the princess of the country.
You get the same feel when watching both of them

MLs are Generals who love the FL dearly.
Arranged marriages.
Both they fight for the country.
TRP is deeper in conspiracies and there's a status in the identities gap.
TRP is more mature.
The couple fight side by side and develop trust and understanding
The beautiful love stories in both for ML and FL are the best

First things first their way of getting along I like, It's matured and very responsible.
_both FLs are celebrities while MLs are scientists.
- The way they grow together and trust one another is amazing.
-The fact that they are together earlier and throughout the episodes we witness how they handle problems etc, instead of hundred misunderstandings and one episode of happiness.
It's how in reality most people behave and live.
if you watched one watch the other.

I just love the theme of a theme involved from the FL's side.
in MDL the child's is not the ML one but it is very fluffy and amazing

Beside the military/medic theme.
These two are very similar.
Saves lives
Special Forces.
Romance in the midst of disasters.
There is much more.
I also love the fact that the Commander from Kungfu Cop is a Dr in My Dear Gurdian love that actor

LS has the same vibe as IL.
The male lead are intellectuals who love the FL.
The FL is in the entertainment industry.
THe maturity and the vibe of their relationships is very similar

Both about a man who works from the bottom to the top.
in GOW ML is the slave while in QQZJ he is a bandit leader.
I haven't watched GOW but for that they have the same work hard ML.

Both about a man who starts from the bottom to the top.
I haven't watched GOW but by synopsis they are similar in that.

Both is about a commoner rising to power and being loyal to only one woman.
Qing Qing Zi Jin, the male lead is an intelligent bandit leader while in Royal Highness the male lead is only a commoner scholar.
Both the dramas female lead only see the male lead and support to the end.
No Second Main lead syndrome (Lucky for that)
*There are a lot of similarities don't wanna put spoilers though.