I admire and applaud the virtuous digest of all these concepts that are bandied about and celebrate the humility to resolve certain concepts that are better off in my view, debunked, like the twin flame, better off in my view debunked than rationalized because too many false prophets profit from this abuse of people's emotional needs. I state this with confidence becuase my Lord Rama, whom I interchangably refer to as God, a God, them, they, et al etc., and fits very much your definition of Oversoul in that this higher dimensional entity holds sway over my spirit guides and will most likley be in charge of my life-review, laughed at the concept and said that's the stuff of Harlequin Romance novels
I was only able to skim so far--I will certainly re-read when time and priorities permit