I did some more exploring (I was doing the new quest anyway) and this is what I found:
Cosma is OK
Spriggan is backwards (as per Addingfoot Trip)
Lem is OK
Mab is OK
Pot is hard to tell, but I think backwards (as per Adanac)
Zille is backwards (Fairgower Lane)
I'm going to keep looking in territories with other shrine styles, because I am sort of weirdly enjoying this.
Yeah, I came back to report what Ayasta already said -- the backwardness doesn't seem to be by giant after all. Mab is backward in Hechey Track, and Lem is backwards in Grand Mile and Pasha's Place. This is the weirdest thing!