Should add that to the theory list....

I personally don’t discount this, but die hard fans will baulk at it since Luke is really trying to be a Jedi by starting the school and thus live by the Jedi code which would preclude this. But it could be this kind of indiscretion that indirectly leads to the schools downfall and Luke’s great guilt and reason for…

I vote for Obi-Wan’s granddaughter. The lightsaber that called out to Rey was in his possession the longest, for 19 years. He would have just as strong a connection to it through the force as its other two users. While he was on Tattooine he was no longer a “Jedi”, he was in hiding, he was just known as Old Ben…