Yep, they are pretty cool ! Until there is no other pests left…

Hey OP ! I’m digging this back up, I found a smartphone that might interest you (with a few caveats) : The Nokia G42.

It’s an interesting one ! Built to be durable and reparable. It’s a smartphone, but Nokia worked with iFixIt to design this model; you can remove the back cover to “easily” change the battery, the USB-C port and the screen. It has a headphone jack (even if you don’t care), a decent screen (90Hz, 720p though), has expendable storage to 1To, approximately 2 days of battery life (Nokia claims 3 days), it’s “cheap” (can be found where I leave to around 230 euros) and has take decent photos (for its price). Not sure about rooting this one though !

The main issues from my point of view are updates (3 years of security update is OK, but 2 years of guaranteed Android updates is short), and the processor, which is quite weak. Not sure how it will perform in newer version of Android.

Very hard on that price range. Above your price range sits the Asus Zenfone 10 (the 9 is really good as well), which covers a lot of your points. The 10 allows you to disable everything and have stock Android experience. Not bad ! Not sure the 9 had that.