Which of these is ground, neutral and live?
There is no ground here

From the vintage of your wiring, I can tell you that that center bundle has nothing to do with ground, that much is certain!  Instead, what you have here is an incoming mains feed which joins to an outgoing mains feed and a switch loop for the light.  As a result, the left is indeed switched-hot, the center always-hot, and the right neutral, which explains why the center wire group was not connected to the light.