The never-ending collection of stories I've personally enjoyed about an OP MC in a variety of different situations. Usually an isekai or reincarnation.
Tends to avoid harem (or blatant romance) but there may be a few. Trigger warnings will be added. A blatantly self-indulgent list in no particular order.
Part One is here: https://www.mangago.me/home/mangalist/1132346/
Strong lead
Action
Mc gathers talented individual
If you like items of this list you can read these web novel too:
Turn out to be a genius duelist
Sword master's youngest son
I am the Monarch
The Duke's Eldest Son Escaped to military
The Greatest Extra in history
Max Talent Player
The Author's Pov
Character Growth / OP Lead :
https://www.mangago.me/home/mangalist/688033/