Hmm, seems in the moment I got them confused, but it seems the level 39 staff drops in Spind have no focus bonuses, or at least the two I found don't.

Just as I reported the Runic Soul-Shaterer having no focus, the Bewitched version has no focus either, possibly the other ones don't either? Assuming there are four total, one for each class

The Midgard staff drop in Spindelhalla, Frozen Soul-shatterer, has no spell focus on it of any kind.