Theory about Baelfire being the Wizard of Oz and knowing August and Jefferson:
This theory I have about Baelfire but it probably won’t happen ( I know this theory could be a jump the shark theory material. ) :
Baelfire went through the green portal from the bean and he landed in Kansas,
He could have met Dorothy and they became friends and somehow they found a portal to Oz and he decided to stay in Oz and he became the Wizard and Dorothy went back home to Kansas with the ruby slippers. A few years later, he found a way back to Kansas but he could go back and forth to Oz.
He grew up in Oz but the time is different there and he is still young.
I know this won’t happen but I really hope he is the Wizard of Oz because it would be Like Father, Like Son type of thing.
Also if he was in Oz, he met Jefferson and he was the one that told him that the slippers were moved. Also when he came back to Kansas he met August and they became best friends, and he was the one that told August about his dad Rumpelstitskin and the dagger. Maybe he told August about the ”dagger” because he found out about August’s condition and him being Pinocchio and told him that there was a dagger that would help him but he had to pretend to be Baelfire to make the plan work. Another theory I have is that August told Baelfire about the curse and maybe Baelfire had a feeling that his father made the curse but maybe he doesn’t know is that the curse was made to find him.
Also August had a Kansas license plate on his motorcyle so he could have met Baelfire and Dorothy when Baelfire came back from Oz.