This is a wonderful-looking infographic, but I truly don't think there are 49 GPUs that mattered in the PC gaming hardware space - let alone all of computer graphics. Call it recency bias, but after the Pascal cards it feels like maybe one or two more entrants actually mattered?
Pascal is already too late to matter (2016) IMHO.
With the release of D3D9 in 2002, GPUs of different vendors didn't really stand out anymore since they all implemented the same feature set anyway (and that's a good thing).