I am with you and like simple. I am a kid at heart and this is how I explain it...
When I get asked similar questions I explain that Capone and Miss Marley are English Mastiffs. I then ask if they have seen Sandlot or Payback and explain that those dogs are OEM. For a Neo and liken them to Fang in Harry Potter and that they are alot more wrinkley than the OEM. And the Dogue de Bordeaux (French Mastiff), I tell them that is the Turner and Hooch Dog. When I get asked if Capone and Miss Marley are Bull Mastiffs. I just say no, that BM look a lot like an OEM, but are smaller in every way.
I am clueless on the Cane Corsos and Tibetian Mastiffs... are they in any movies? LOL!
I am not sure how accurate I am, but comparing the puppies to a movie dog seems to help others a lot. I'm interested in what others also have to say.