Recommendations

Similar with the investigations, addresses sensitive topics, and they are centred around justice for the people who can't get justice for themselves, ghosts and probono cases, they all deal with one case per 2 episodes ish

Mad Concrete Dreams, Dream Life of Mr Kim, Walking on Thin Ice, etc - so many dramas about ordinary people resorting to illegal activities to "win" in the rat race - are just variants on Squid Games season 1. (Seasons 2 and 3 are trash), Season 1 is a "molotov coctail thrown to expose exploitation by elites" as one reviewers so well described it. Imo they are also a molotov coctails thrown to expose how the flaws and dumbness of ordinary people lead them to be pions and exploited by the elites.
So if you want to watch the most violent deep-source, root-causes version of MCD, then watch Squid Games season 1.

Both seem to be adapted from the same script so it follows the same storyline. A down and out heiress in debt hooks up with her cheating fiancé's uncle.

If you're interested in Park Gyu Young in another romantic lead , with a different flavor to Fall in Love, I recommend Dali & the Cocky Prince. Quirky and fresh, her character was softer, with more frills... And you get to see her range.

Both MLs are depressed and at the lowest part of their lives when they encounter the FL who they view as their salvation. Both MLs become stalkers, finding ways to get close to the FL, with her having no knowledge of their shared past/former meeting.

Literally the same story! I think they stole the story. Both are about people who accidentally time travel to the same old era in the past. They both have to adapt to their life in the past and they fall in love with the hot guy who works for them. Both from a royal family and a forbidden BL romance. Both have a comedic ML and there's funny moments.

The 2nd couple is similar (2nd ML: Stoic, 2nd FML: a little sunshine) -- The 2nd ML keeps denying it at first and see himself not worthy for her

Both os these BL dramas are almost practically the same. I will say Make it Right has less of the 'ashamed to admit to being gay' theme to it that saturated Love Sick, but I liked the plot of Love Sick more as it felt more reality based while MIR felt more like a drama.

Romcoms.
Main character has memory loss, and is falsely told that they're married and a parent by other MC for selfish reasons. Leads then live with eachother under these pretenses.
When the truth comes out, all is forgiven.

Both Eternal Yesterday and Contrast are serious Japanese BLs where the popular guy is drawn to the loner.

Similar healing story the leads have a past and overcome to get close together. The side stories are well tied together and deep. The leads are cute and the female lead does have difficulty opening up. The male lead is same puppy like only the setting is in a small town in when the weather is fine.

The photography and direction are wonderful, which is what they have in common, as well as having a deep and well-told story. I think anyone who has seen one of these series can't help but love them both. I recommend watching both.

set in the same time period, from when the siblings were sent as royal hostages to hongsawadi during the ayutthaya–hongsawadi conflicts to when ayutthaya was liberated. 'Chom Chai Ayothaya' tells the story of princess suphankanlaya, and 'The Last Duel' follows king nares.

Both ML are spys who uncovers drug mafia and both ML's fiance dies at the beginning of the drama. I liked Never say goodbye more.

Wuxia driven plot with a lead poisoned and went a quest together. Both driven, cunning and manipulating each other until they both fell in love, but the scheming continues with a lot of angst. No special effects overdone. Well written plot and characters. Great acting! Not famous ?ctors but very watchable and well done.