These coatings are deposited in an extremely thin layer a few atoms thick. They do have some benefits, but you can't really go by what the package says, unfortunately, that is just Marketing. You have to go by your experience in trying the blades.
I think this is the best and most realistic answer. These are all PVD applied "coatings" which bond with the surface of the metal on a molecular level.
Different blades have different combinations of these coatings. They are nothing that a human being is going to differentiate.
PTFE coatings are applied on top of the PVD coatings and rub off with use.