Lineage on a Xiaomi redmi 10 pro, everything working perfectly (also dual SIM and SD card + headphone jack) get about 2 days battery life. Though it's quite old now so I've no idea if it is as good as a OP5 or not lol
The way you have to hide from apps is a bit weird these days using magisk filters, but other than that the entire thing has been set and forget, and I've not had any issues
As @morrbo said, you can get a Redmi Note something, I'd suggest the Redmi Note 13 Pro (not plus, that doesn't have the headphone jack, for some reason).
It is great, and the offical unlock tool works seamlessly.
But you have to wait a week before unlocking, which I guess is there for you to """try""" MIUI. Still not a problem, though.
Running https://github.com/kdrag0n/safetynet-fix/releases on magisk to allow for things like NFC payments using Google wallet etc.
The way you have to hide from apps is a bit weird these days using magisk filters, but other than that the entire thing has been set and forget, and I've not had any issues