@Dora: Our high overlap continues to startle me. It's spooky: Literally everything in your post - 100% - could've been written by me. I know and like (or in many cases love) all 20 titles:

dora:
Japanese BLs
All ten titles, check - especially "Takara-kun to Amagi-kun" and "Takara's Treasure", two of my all-time fave JBLWCPs.* I've re-watched both of these more times than I can count.

dora:
Korean shows
All three, check - especially "Boys Be Brave".

dora:
Several Thai shows I really enjoyed which are considered not very good include:
All seven, check - I'm willing to overlook a lot for my favourite cuties! In most cases I already knew the actors (@Tutor & Yim: I love you guys!), but in the case of "I Will Knock You" I knew none of the cast - and gosh, it was such an unexpected delight. I loved it! (I should do a re-watch.)
+++
I haven't looked up each individual MDL rating, but I would just add that I consider an average MDL rating in the 7.5 to 7.9 range to be reasonably decent, so I'm not sure I can say "underrated". In any case, I think I have all of these at 9 or 10 stars.
* = "Japanese BLs with Cutie-Patooties"