There are definitely some recurring themes and places with dmt but then again, I've also been sent to some very different places that seem to have no relation at all.
I had a couple of really shocking experiences where they seemed to bear no resemblance to anything dmt-related: Once I 'became' a gardener who was looking at the roots of a tree in some alternative reality, nothing psychedelic about it, and another one the images were also completely "normal", no colourful morphing fractals at all, it was just normal scenes like a street and sidewalk, a kid's room with some toys, a vinyl player, etc etc.
Im sure soon enough you'll find that eventually dmt will just completely break all the ideas you previously had about its effects. Its just so mysterious, and there doesnt seem to ever be an end to this mystery.
BTW, awesome that you've been having so much success with your vaporizing method only taking one solid hit, congrats on that! If you dont mind sharing, what is your method of vapping?