In-case this helps anyone else, the dimensions of these phones:
spoiler
https://murena.com/shop/smartphones/brand-new/murena-fairphone-6/
Dimensions (HxWxD) 156.5ร 73.3ร 9.6mm
https://www.punkt.ch/products/mc02-5g-secure-phone Dimensions: 165.9 x 77.8 x 10.9mm
https://volla.online/en/volla-phone-quintus/ Device dimensions 164.15 x 74.7 x 8.75 mm
https://volla.online/en/volla-phone-plinius/ Dimenstions 163 mm x 76 mm x 10.5 mm
https://volla.online/en/volla-phone-x23/ Device dimensions 160.9 x 80 mm x 12.2 mm
https://commerce.jolla.com/products/jolla-phone-sep-ii-2026 Dimensions: ~158 x 74 x 9mm, est. 190g
https://furilabs.com/ Dimensions 170mm x 76mm x 8mm / 291g
https://puri.sm/products/liberty-phone/ Dimensions (WรHรT): 74ร152ร15 mm
https://pine64.org/devices/pinephone_pro/ Dimensions 160.8 x 76.6 x 11.1mm
https://store.fxtec.com/pro1/#specification Dimensions: 154 x 73.6 x 13.98 mm
I wish there were a small phone :(