Can we make isoglosses?

[ReneZ]

If it were real German, wouldn't it have to say "so nim auch Ziegenmilch"? So "o" is (also) in the wrong place.

I think it is risky to put too much meaning in the loose "o" at the end.
I think Panofsky suggested it could be the start of "oder" which would not be problematic at all.
But it can be so many other things. Or nothing at all. Or the initial of the scribe (Otto).