Welcome to quantum qualifications.
CMNO and CMNA are functionally equivalent and not equivalent.
They are the Schrödingers. Or, if you must, the Erwins.
At the end of the day it is all about massaging the egos of the folk who do the marketing.
There should definitely be qualifications for people who obtain proficiency in using the API and writing the code appropriately. And by that I mean that it should go beyond a basic understanding of what the api calls do, and embrace the generally accepted coding practices for the language concerned, be it Python, Node.js or NodeRed.
Location analytics is probably another specialty worthy of its own qualification.