This tree does not have any grafts on it.
All updates:

(November 18, 2024) Pre-Winter Report -- Unfortunately the graft didn't take and eventually the wrapping came off. A side sprout is now approximately 14" tall.
This one is still in its pot and will overwinter outside (or in the garage, in the event that we have a really cold spell). Location is west-facing gets about 4 hours of direct, strong afternoon sun.