How detect match name and game mode?

Does anyone have a ready-made list of game mode codes that determine the map name and game type for MM/Premier? Or is there another way to determine the map name and game type?

For example, in the matchList request, I found a pattern in the match field: reservation.game_type = 520 means Premier Dust2. But for some reason, sometimes 520 also means MM Dust2.


