https://www.mangago.me/home/mangalist/510994/
Credits to the owner it's not my list!
https://www.mangago.me/read-manga/the_moon_painting_alchemist/
https://www.mangago.me/read-manga/the_titan_s_bride/
https://www.mangago.me/read-manga/a_proxy_painter/
https://www.mangago.me/read-manga/should_i_write_you_a_love_letter_instead/
Not pinpoint what you asked for but they're similar recs!, the list is pretty accurate though
- My master, my Joo-in
- In the air: be, be
- Willow love story
- The king's maker
- Who's your daddy? (king x guard)
- Scent spark (not exactly royalty, the top is like a mage who is in the castle with the king's guard kind of thing)
- Smyrna & Capri (king x army soldier from the opposite side)
- Turning
- Plaything
- Taming the tiger (beautiful... but may or may not make you cry 3 days straight)
- The Rogue Prince Is Secretly an Omega (both are royalty, but the top's title isn't as high as the prince so he actually goes to the army to become a knight and doesn't do more of the political part of his title)
- Master from another world
In the same vein of royalty x failed/poor royalty that get married to save their family and don't have a lot or any power in comparison:
- Blossoms of the white night
- The taming
And also in case it interests you:
- The trapped beast (royalty x royal from enemy territory that becomes a prisoner and has 0 power in that context)

Do you guys have any yaoi recs where it’s like a king or someone (could be in modern) with higher of power and they date someone who’s the complete opposite of that?