How to get Auth Profiles list from Auth Manager

I've had a little bit of experience with looking at the auth repository via Groovy, though not not with OAuth profiles or specifically what you are after, hopefully this will get you started:

def authRepository = testRunner.getTestCase().getProject().getAuthRepository()
def entrylist = authRepository.getEntryList()

entrylist.each(){ entry -> 
	log.info('Entry "' + entry.getName() + '" class = ' + entry.getClass())
}

When you find out what class the entry is you can look it up in the API Docs to see how to access the data you need.

I think that the OAuth 2 profile entries have a method getAccessToken() which may provide the data you need.