I have been using Xperia 10 III as my main phone for years with Sailfish OS just fine.

Looks like they also support up to Xperia 10 V & there is the Jolla C2 community device:

https://docs.sailfishos.org/Support/Supported_Devices/

I remember not too long ago seeing a similar table from Jolla that showed these devices, but also included a breakdown of specific hardware features that were not fully working. Was there a major update in the last few months that cleared that up?