Does Cummins/Bosch really 'name' their injectors? I would think they just give them part numbers. Its us who tend to call them by the engine rating they came from. 215 Injectors are the injectors that came from a 215 HP motor. Because its easier that telling someone that you have the A204935-AB injectors ( made that up ).
I have no clue about flow rates, etc. But there is probably some bosch engineer somewhere who refers to these as the 20cc injectors, or the 40cc injectors, or some kind of thing like that.