This is so interesting! Thanks for sharing your dreams, y'all, I really enjoyed reading about them.
In my dreams I'm always real me, except for one time when I dreamed of turning into a woman and woke up thinking "well, that was weird...oh bugger". At times I've seen real me in a mirror or from a third-person POV or something, and he's always the same. Same face, same hair (my biological hair but a bit wirier and a bit more ginger), same height etc. He's not too different from biological me and probably what I would look like if I was born male. Essentially, he's the phantom me that lives inside my brain and is what my brain always thinks I am.