Victorian BL’s recommendation

https://www.mangago.me/read-manga/kakumei_no/

I was reborn as his highness the prince’s little evil dragon
How the Sidekick Prince Lives Again
Oh, Captain! My Captain!
The Fallen Duke & the Knight Who Hated Him

https://www.mangago.me/read-manga/kakumei_no/

"A Painter Behind the Curtain" if you want angst and depression.

https://www.mangago.me/read-manga/nobara_to_pretender/

Turning
King's Maker
I can see your stats!
Priest dreaming of a dragon (has some eastern themes too)