A_Okay

I feel conflicted about History 4, also. I actually stopped watching and I don't know if I will go back to continue watching. For me, it is not one I will re-watch.
As for recommendations for other BLs, these BLs I do re-watch because when I'm struggling in my life they make me forget my troubles for a few hours. Also, some of them tell really interesting stories about discovering who you are or how you want to live your life so you can be happy. I just started getting into South Korean BLs as you can tell from my list. My all time favorite is Cherry Magic (Japan) but I see from your list you already have seen that. And since you said any country is fine, I recommended some non-Asian BLs.

Color Rush - (South Korea)
To My Star - (South Korea)
You Make Me Dance - (South Korea)
Mr. Heart - (South Korea)
Seven Days (Monday-Thursday) and Seven Days (Friday-Sunday) - (Japan)
I Told Sunset About You - (Thailand)

If you want to watch something not from an Asian country, I would recommend:

Skam (Season 3 only) - Norwegian version only
God's Own Country (2017 movie) - England
Jongens (Boys is the English title of this 2014 movie) - Netherlands
Plan B (2009 movie) - Argentina

I am watching it on the ThaiBLFan92 patreon site. You'll have to subscribe. It's $5 US dollars a month but it is worth it because they do a really good job with the English subtitles. They even subtitle the lyrics to the music and previews for upcoming episodes. They work really hard on the subtitles so I don't mind paying $5 a month. ThaiBLFan92 also has a lot of other BL shows they have subtitled.

I miss Lovely Writer, also. I check back every day to see when the special episode is going to air. Some say on June 1 (USA time zone). I hope that's true. If you watch shows from Japan, I would recommend the BL "Seven Days: Monday-Thursday" and its sequel "Seven Days: Friday -Sunday". Putting the two shows together it is about the length of a two hour movie. I go back and watch it every now and then when I need something calming and sweet. I haven't really seen a BL with this story line before so it was unique to me.