I suggest that details in the accounts show that Joseph Smith experienced theosis or divinization in the First Vision, realizing his Oneness in God, or Christ living in him.
The Saving Power of “Christ” Consciousness
Christ consciousness is a term that is often seen as New Age woo-woo, but it has deep and genuine mystical roots, and I think it is the future of Christianity.
Joseph Smith’s Mystical Christification in the First Vision
I suggest that Joseph realized Christ in himself in his First Vision, and I think this can be seen in many details in his accounts.