Nice choice on the XZ2. Like you I picked up a phone from the Xperia line. It's an older model than yours, namely the Z1 Compact, which I chose after filtering for form factor, LineageOS support, and price. I wrote about it here: https://hallau.world/post/the-perfect-android-phone/
That's a great little table you've built there, highly useful for finding new phones with LineageOS in mind, bookmarked! I wish I would've found it a week ago...
My previous phone, a Sony Z5 Compact, was sadly one of the worse phone experiences I ever had, software wise. I used it for 4 years and in the end it was sooo slow that was unbearable (maybe the internal storage degraded?). Battery life was great thou, 2 whole days when I bought it and in the end it was about 30 hours but after 4 years it was better then newer, just unpacked phones.
Wow, the Z1C is pretty old. Do you have any trouble with battery life?
I used to run a Z3C, but after some of the seals got loose I upgraded to an XZ1C. It's near perfect for me, and I don't know where I'm going to go next for a compact phone.
I also had a Z3C and upgraded to an XZ1C. I liked the Z3C's rounded rectangle design as the XZ1C can be uncomfortable to hold in certain configurations. And I liked the color tones for the Z3C more. Other than that I'm very happy with the XZ1C. I hope they put out another phone with the shape of the Z3C and the specs of current flagships.
I did have the same issue on the z3c with the seals coming loose. Eventually the glass panels got loose too.
