Unfortunately the answer is not always straightforward. Referring to Xperia 10III Jolla are now happy for you to use either Android 11 or 12: https://jolla.com/how-to-install-sailfish-x-on-xperia-10-iii-on-windows/
However with regards to Android 11 there was a version to avoid as here: https://forum.sailfishos.org/t/sony-xperia-iii-android-12/11029/6?u=aspergerguy