I have no special insights, but Sony's phones seem like a good fit. They are really easy to unlock [1], but there are virtually no mods but Lineage. Maybe because they are very stock Android and bloat-free?
They range from 300 to 1000 EUR. I personally am fond of the "lower end" and slender Xperia 5 and 10 lines and the customary 21:9 screen ratio.
Don’t Sony’s have the issue of crappier photos after unlocking because of some DRM key shenanigans? This is what I remember about my old Xperia X1C and I so left for Pixel and then eventually iOS so things would just work and last longer than a year or 2.
They range from 300 to 1000 EUR. I personally am fond of the "lower end" and slender Xperia 5 and 10 lines and the customary 21:9 screen ratio.
[1] https://developer.sony.com/open-source/aosp-on-xperia-open-d...