I am trying to connect a PC keyboard of the following type to my Mac mini:

As you can see its an ISO keyboard and is mean to be used for swedish/finnish(but also works fine for danish which is what I am using it for). Looking at a real ISO apple keyboard, the layout looks similar:

When I connect the PC keyboard shown at the top, the Mac mini is failing its automatic keyboard detection, so I skipped it and selected ISO manually. Update: After following a tip to delete a certain plist file and reboot it now gets detected as ISO, but still doesn't show as it:
However, when I go to Keyboard->Input Sources, I see this:

That is an ANSI keyboard( not the long left shift and the slim enter key. In the virtual keyboard, when I use the >/< button to the left of the shirt it writes '$' but does not indicate a key press on the virtual keyboard.
How can I fix this and force it into ISO mode? That would immediatly fix the position of >/< and @ for example.
EDIT: Details on Mac:


As you can see its an ISO keyboard and is mean to be used for swedish/finnish(but also works fine for danish which is what I am using it for). Looking at a real ISO apple keyboard, the layout looks similar:

When I connect the PC keyboard shown at the top,
However, when I go to Keyboard->Input Sources, I see this:

That is an ANSI keyboard( not the long left shift and the slim enter key. In the virtual keyboard, when I use the >/< button to the left of the shirt it writes '$' but does not indicate a key press on the virtual keyboard.
How can I fix this and force it into ISO mode? That would immediatly fix the position of >/< and @ for example.
EDIT: Details on Mac:

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