Wow that's starting to be quite a reference set.
The Passau reference is I think now out of date -basically that whole ground floor of Passau was rearranged and resorted some time earlier this year - an amazing job - so the Phoenix pattern is no longer, if it ever was, attributed to Oertel.
But there is nothing to say its not Oertel -except the only attributed piece I seen is quite different in style.
I do think we have that other pattern nailed as Rasche though.
Mind you dozens of glass houses must have dabbled in the oroplastic technique -lots round Haida, Moser to the east and Kralik and 'sort of Loetz' to the south too.