I’m going to have a crack at a Colemak keyboard today. If that works and I can find a Norwegian corpus I’ll try to make you one with your layout.
Edit: unfortunately not having much luck, the only way I could make Colemak work was to install @ringus’s English US keyboard, reboot the phone a handful of times, confirm that worked, then edit /usr/share/maliit/plugins/com/jolla/layouts/en-presage.qml to match the Colemak layout and restart the keyboard. If I tried to build a dedicated Colemak rpm by following the steps at sailfishos-presage-predictor/utils/keyboard at master · sailfish-keyboard/sailfishos-presage-predictor · GitHub, I’d end up without predictive text working no matter how many times I restarted the phone.