As far as the Proto-Xeno its a term that has to be used wisely... AC has coined (from Fassbender slip tongue or actualy whats really going to be shown). The Neo-Morph
I think people need to look at things in a different context and Lindeloff said the Hammerpedes and Deacon were Proto-Face Huger and Xeno.
Depends how we see these words... as...
Proto genuinely means ...
*First, Origin, Predecessor meaning what comes first or before. And so Proto could or should mean Predecessor or Origin.
Neo means New or Young and so with the Xeno is a New Form or Young Form.
Like the
Ultra-morph means Ultimate as far as form of Xeno.... Morph meaning in context FORM
Xeno-Morph just means Alien-Form