Hm ... I simply say, that it can't hardly be accident, that the early Poilly decks produced a phenomenon (Chaos as a playing card) at a specific position (Nr. 1) and that Etteilla repeated these both features without knowing about the figure Chaos in the Poilly deck.
That's a curious accident and it's very likely, that it is no accident, but something else, an unknown context.
... This "unknown context" is then the "riddle", and with that it is that, what a good researcher with some instinct should look for.
Chaos is an old Greek idea with a very direct relation to a figure called "Momus" and Momus played a greater role especially in French carnival.
The "Regiment de la Calotte" (founded 1702) took the motto "Favet Momus, luna influit", from which we easily understand "Momus" and "Luna".
Momus got in the version 2 of the Minchiate Francesi the number "29" ... there are some natural conditions (29.53 days between full moon and next full moon) which associate the number "29" to "Luna".
Also one shouldn't overlook, that the long reigning Louis XIV was called "Sonnenkönig" n Germany, I don't know, what you say in English, but this means "sun-king" or "king of the sun" or something similar.
Well, this are all puzzle-pieces of the riddle, what the Minchiate Francesi might mean, and enough indication, that one should research this Minchiate Francesi, when discussing this strange Etteilla order of the trumps.