Who are the main players?
I have seen that a lot of nibs bear no makers name that come as the OEM fit in a pen.
You see IRIDIUM POINT and a five-petal flower or a circle with IRIDIUM & POINT above & below.
That's what I have seen so far. No trademark to identify their origins.
The OEM nib on a Indian pen is usually a Fine. You can get broader stuff as a after-market upgrade, though I suspect that has been driven by online sales to the rest of the world. I guess the Fine point is best suited for writing in languages native to India.