Hold up, when were these 14 shiny releases?!
Serebii also has a list of Rayquaza event distributions in the past too but Bulbapedia's was easier to take a single screenshot of. Yeah a lot of the events are just the same one but for different regions but even with that, the number of non-shiny Ray distributions can be counted on one hand compared to shiny (3 non-shiny versus the near 10 shiny has even with the redundant ones axed).
EDIT: Got beaten to it rip