humour in taking things very, very literally

Ah, OK. Yes, I do that too. I just thought I should check :-).

I don't think you can really tack "there is no god" to one end of the spectrum

"No god" and "god who does nothing" are very different metaphysically but have the exact same observable consequences, and evidence for or against one will equally be evidence for or against the other. I don't see that it's obviously inadmissible to put them next to one another. Of course the more interesting notions of god are ones that do do something (even if only to create a universe according to their whims rather than according to the dictates of some "mindless" physical theory), but we've already agreed (I think) that those can be put on a spectrum that has "perfectly inactive god" on it.

The way I see it

My perspective is a little different. They decide the following three interlinked things: (1) where the observable features of the universe lie on that spectrum, (2) what their religious position is, and (3) how the universe should look if #2 is correct. They generally decide these so that they're reasonably consistent with one another. Then if they learn new things about #1, they may change either #2 or #3 to make it match; if they change #2 they may convert or deconvert; if they change #3 they may change their theology or their ideas about physics or something.