Power Bottoms:
The Voice Next Door (not sure if counts, but bottom is definitely the assertive one)
Unromantic (the bottom here is cool)
Goriyou wa keikakutekini
Meaty Bottom:
Love Tractor (personal fave, cause adorable)
Campus conspiracy theory
Bitten By Moonlight
Holiday
Comfort Rewinder
High Clear
Rix Vanus
Full Volume
Seems like a top but submissive bottom:
Off-Track Crush
The Hunter's one night
Nirameba Koi (the bottom here is just so hot and so my type)
Top Switch to Bottom:
Payback
Kabukicho Cat Honey
Define The Relationship
Just binged this one, and I was reminded of this question. This is the closest to Jin for me rn.
Top Switch to Bottom ✓
Power Bottom ✓
https://www.mangago.zone/read-manga/the_pizza_delivery_man_and_the_gold_palace/
tbh ones that seem like top but turn into submissive mess !