Check under GENERIC or search the internet to find a similar style fixture and then compare the DMX channel listing from the right side of the lighting window.
There are only duplicates when the functions are different. If, for example, two fixtures had only 2 channels of operation:
CH1 - Colour
CH2 - Dimmer
That's one profile, and both fixtures would point to that profile... but you don't need to worry about that, just look for the name of one of the fixtures (in your case, probably GENERIC).