There might, for all I know, have been at some point an eight-element Canon f/0.95 lens designed specifically to cover the smaller area of a video-camera imager and using a different optical design.
It wouldn't necessarily be a 50mm lens; note that on the diagram, the left design is specifically labelled "50mm f/0,95" while the right one is simply labelled "f/0,95." Lenses of this speed, or even faster, were fairly common in shorter focal lengths designed for motion-picture cameras or video cameras, which have a smaller coverage area and consequently can use more aggressive optical designs.
Since this lens (if it exists) wouldn't be intended for still photography, it probably (if it exists) wouldn't be listed on Canon's "Camera Museum" website or in photographically-oriented lists.
What makes the photographic Canon 50/0.95 unusual is that it was a volume production lens that covered the 35mm still format. The commonly-seen "TV" version of the photo lens is in the same type of barrel as the photo lens, whereas it's clear from the diagrams that the video-only lens (again, if it exists) would need to be in an entirely different style of barrel.
I agree that it will be interesting to hear from the real collectible-Canon experts on this, but in the meantime I'll bet dollars to donuts that the left lens in the diagram is the Canon 50/0.95 with which we're familiar (in either its rangefinder-coupled photographic or uncoupled TV guise) and the lens on the right is a completely different optic, possibly with a different focal length, designed for video coverage only.
"Never trust a graph without error bars."