I switched from samsung to Fairphone, and oh my gods base Android is missing so many nice little features and options I'd been taking for granted on OneUI.

Smart switch: actually copies your data over instead of simply redownloading your apps and letting you figure out if/how to transfer individual backups.
samsung gallery: tags, offline categorization, fantastic photo and video editor. Routines, One Hand Operation+ (though "Quick Cursor" is a decent replacement), quick settings. On samsung there's a feature which can automatically turn off/on wifi when leaving/returning home. google has basically the same feature... but only turns your WiFi on! They really want their location services to be scanning for networks at all times. And apps, like tasker, can no longer manage WiFi either.

Even so, fuck samsung. I would make the switch all over again.

I use Graphene and, sadly, that option is not in that section for me.

Search settings? I sometimes can’t remember where something is. I use the search box in settings.

There's one thing i truly loved about Samsung devices: there is an option to turn that off build-in (hold the rotate button in quick settings when rotate is off, i believe).
Sadly, a toggle is not present in AOSP (as far as i know)...