The original way I imagined the formation of Auriel and Lorkhan originally flowed as so:

Anu and Padomay > Anuiel and Sithis give life to their spirits > Giving a life to these spirits comes Auriel, a dragon of time which personifies order, and Lorkhan, who in his life personified the qualities of chaos and change in many ways.

The explanation I gave for Lorkhan's unexpected behavior and his interest in the Tower was partly his Padomaic spirit leading him towards chaotic behavior, and partly due to an unusual effect where as an agent of change his spirit would inevitably change towards his opposite, paradoxically facilitating a shift towards Anu leaving Lorkhan gray, which is why Mundus became the "gray center" of the Aurbis.

His paradoxical shifting is where I assumed the root of the concept of the Enantiomorph lay, at a metaphysical level. I have recently, however, began to form an alternate theory which is partly inspired by the Psijic view of the original creation of Auriel. The Psijics in their reverence of change strongly consider the possibility that Padomaic influence inspired time, IE Auriel, causing Anu to act. I agreed with their principle that time was paradoxical and inconsistent with Anu without Padomaic influence, this left the question "Who caused Anu to move?". The concept that Lorkhan managed to act without Auriel seemed completely improbable to me, then it hit me. What if Auriel and Lorkhan shared more similarities than I had assumed, and Auriel had shifted towards Padomay slightly of its own accord, and this had in a sense pushed Lorkhan further towards Anu than he should have, leading him all the way to gray (imagining the relationship between Auriel and Lorkhan as an Ouroboros of sorts)?

This theory seemed consistent with the continual hints throughout the games that there is more to Auriel than we know (well I saw them as that), and it also sort of suited itself to the image of the Wheel that Vivec gives us. This theory lead to an extension of the concept of the Tower which I am less certain about which considered that if one was to view the Wheel sideways, the relationship of the deities that leaned either towards Anu or Padomay may have some physical manifestation towards either side, and this interplay would lead to the misshaping of the Tower that gives the illusion of an 'I' that is difficult to visualize.