I agree that the story is extremely well put together, and keeps you guessing. I don't even really count the need for the datalog as weak storytelling, I actually quite enjoyed it. i actually posted a theory in my thread, On Orphan and Barthandelus, which actually says the same thing as you. However, my designation of the gods were a little different...

Stout - Pulse (maker of the earth, makes sense)
Luminous - Lindzei (couldn't remember my reasoning have to look at the analect)
Fool - Etro (it says fool desired nothing and so became one with it, which is also said about Etro in the Analect you quoted above)
Sage - not really mentioned in detail in the datalogs

However, none of us may truly know until they decide to release more information on the FNC saga. Etro is also the Goddess of Death in FFvXIII. Noctis and Stella are discussing a painting of Etro at the party where they first meet. My theory was that the greenish entity that you fly through on your way back to Cocoon in Chapter 11 is Etro herself, as the Analect that talks about her also shows a picture of this entity.

One thing is for sure though, the Maker is a totally separate being than Lindzei and Pulse, that much is made clear through the Analects. There are actually some other really good theories posted by other people in the other thread I mentioned, you should check it out and see what you think.