That there are certain similarities between the late mediaeval trionfi processions, or between, in fact, numerous other influences on what became Tarot, does not mean that tarot either arose from these, and even less that there is a 'fool's journey'.
Basically, apart from non-Tarot decks such as the Mantegna, and rare examples of a number being included on the Fool card, the norm is to retain that card as un-numbered.
That the GD decided to add a zero thereon, and thus force its position to before card one (the Bateleur or 'Magician') is something that of course regularly is discussed in various sections of these Forums.
There are also various systems of Hebrew letter attributions to the Atouts (Major Arcana) of the Tarot, the most common (but not sole) attributions being mentioned in especially the thread:
Hebrew letter Tarot correlations.
Further, how letters may be linked to any 'paths' that connect the various
Sefirot is itself questionable.
One of the common attributions is to have the three mother letters (
AMS) upon the horizontals, but this is strictly in opposition to the
Sefer Yetzirah, which states that the letters are places in either a circle, circles, sphere, or spheres (depends on the version).
Again, what is presented above by Aeon418 is a reflection of GD-style correlations - which is certainly not to be taken as the definitive view, in my own personal opinion.