I carry the idea (not original I'm sure) that 5 artists re-wrote the rule book for modern popular music, they are:
Elvis Presley
Bob Dylan
The Beatles
The Rolling Stones
Jimmy Hendrix
Everything else is derivative
(I'm not a big fan of Hendrix but understand his impact)
I started thinking about the Top 5 in camera game changers and came up with this:
The Leica 1
The Leica M3
The Hasselblad 500C
The Rolleiflex 2.8E
The Nikon F
Going back to the original post, I'd swap out the Hasselblad 500C for the original Hasselblad, the 1600F. That set the paradigm for interchangeable lens medium format SLRs.
Camera Obscura
Henry Talbot Fox
Daguerreotype
George Eastman & roll film
Kodak Brownie
Graflex Speed Graphic
Barnack Leica
Hasselblad 1600
Nikon F
Strobes
CCD sensors
Amazed no one wrote "spectral sensitization" so far. Before it, emulsions were only blue sensitive. SS made panchromatic film and COLOR processes possible.