The word and concept of Model is too limiting for VF
I see in @fosterlynn 's latest UML model, which I otherwise love, that "Model" has replaced "Resource Type". Mostly, I want to stay out of naming arguments, but this one seems wrong. It comes from Good Relations, which is a domain ontology for e-commerce, and means "goods for sale". Which is, I think, how everybody will think of it.
VF is much more general, and aims to cover all economic and potentially all ecosystem relationships. Would you apply "Model" to a workspace or lab? How about a farm field? How about a skill? How about electrical energy? How about whole wheat bread dough?
I suggest that "Resource Template" would be adequately general, and also fit with the other names in the diagram better than "Model".