Probably Fairphone (from the Netherlands) and Shiftphone (from Germany), but that surely depends on how you define production.
Fairphone is great. I really can recommend it. It is a bit expensive at first and the specs are not something special, but mine seems to be almost indestructible. I dropped it like a 100 times and the screen is still fine. If it ever breaks I can replace it myself cheaply. I think in the long term, this makes it a lot better than many other phones. Also, a lot of the materials were sourced responsibly.
Do they force updates on users or can these be rejected completely?
Why would you reject updates?
Because I want to.
Not directed at you, just as a reference for anyone stumbling over this post: Don’t reject security updates. There is no reason and it leaves vulnerabilities unpatched. You risk a lot and gain nothing. Patch regularly.
The thing is that nearly every IT professional will tell you to always do security updates.This is not a situation where there are different opinions, it’s just a fact.