@dcz I took the time to find the layouts and noticed someone has done a swedish layout (se - shouldn’t it be sv as per standards?). It seems identical to the one finns would use for a touchscreen keyboard, so until a better layout manifests, could you possibly copy and use that for the fi layout as well approve the merge request made by @uzanto?
And big thanks to who ever made the swedish layout!
(edit: and concerning https://source.puri.sm/Librem5/squeekboard/issues/117, I suggest using this documentation for a guide for naming layouts/files: “languages-sublanguages-regions-…-special layouts” . Two letter language codes are based on ISO standard 3166 and given additional descriptions if needed (there are lists of languages of the world). Then it becomes identifiable and hierarchical, and additional new layouts (even non-standard) can be added later in a sane way without messing with the main languages/layouts by just adding an additional identifier/code after.)