Trans dimensional: This is related to the Dark occults and UFO boundies. Where the persons are transformed and controlled via un seen forces. Where with UFOs are concerned there is direct envolement on the part of the abductors to change the person for reasons unknown to the abductie.
Family in Blood lines: Familys that have a DNA that is pasted on that enable the person or persons to trans Morph.
Vampire, Zombie, and warewolf Morphing: is a carried via virus often a rage virus as is the common name however has lab based history behind this covering centures.
Human Hybrids via blood ties: Example Human Reptilian and other kinds. Often carries trans morphing abilitys. Aslso related to some occultic ties.
History covers a wide enough back ground into Trans Morphing but under differnt names over the centuries and eons into human history. Often related with trying to out wit death to turning to another alternative or having being interferred with by direct or indirect means.