Hi @iKirin aka Peter,
I did say earlier that the ISO Nordic looked fine, but I decided to do one more sanity check.
And I did notice something that may be intentional, but looks a bit awkward. There seems to be backslashes on three separate keys.
I've marked the backslashes on the attached keyboard layout and circled with arrow those, that in my opinion are extra/unnecessary/redundant.
Or maybe backslashes are so important nowadays, that you need them on three separate keys .
I also noticed, that there are two vertical lines too - on the upper right hand corner (numbers row) and also lower left hand corner (next to the left shift). Probably vertical line is needed only on the lower key, not both.
Additionally attached is a photo of my old IBM (yes, IBM!) ThinkPad's keyboard - only one backslash and only one vertical line.
Hope that this isn't too late, if there is indeed any need for a change.