Wino - I understand what you say and have operated in and out of the USA quite a lot. I think it is fair to say that the American system of having Ground Movement Control hand you off to Ramp Control, which is not staffed by ATC and doesn't have the big airport picture, is unusual if not unique to the USA.
More common is to have GMC control aircraft to their parking spot. What this probably means is that the GMC facility is bigger and has more staff than in the USA. No need for twelve different frequencies, many big airports use between one and four at the most, but no more than two is quite common.
Whilst USA orientated pilots will scoff at the possibility of the RJ crew notifying GMC that they were not clear of the taxiway, in a very large number of places outside the USA that would have been SOP.