My theory about the Dragonborn.
I had a few thoughts about the potentially different types of Dragonborn. I believe there could be two different types, with very different purposes.
The first type is the Nordic Dragonborn created by Shor, these are Dragonborn’s throughout history that were specifically dragonslayers, Miraak being one example, the ancient dragonborn souls we see in shors hall being others. These DB were created by Shor to fight dragons, to weaken Akatosh, and finally to break the Kalpic cycle.
The second type are Akatosh’s Dragonborn, created by none other than Akatosh. These were specifically created to subjugate mortals, and keep them worshiping the dragon god. Reman, and Talos come to mind, but also St. Alyssia, the first of these types, making both Miraak and St. Alyssia canonically both the first of their respective types.
Both types are opposed to each other, but through the oblivion crisis the Akatosh Dragonborn line ended, giving Shor the upper hand with the Last Dragonborn. It seemed the dragon god of time was outsmarted by the dead god, and everything recorded on Alduins Wall was by Shor’s design. The Kalpic cycle was broken with the death of the destroyer, allowing mortals to remain unbound by time, eventually reaching enlightenment through the godhead, as was Shor’s original purpose for creating Mundus in the first place.
Anyways this is just the rambling of a madman, tell me if I missed something that throws this theory in the dumpster.