I'd love to see vips in the benchmark comparison, perhaps a Halide-based resizer too as those are the fastest I've found so far. Perhaps GraphicsMagick too, as I believe it's meant to be faster than ImageMagick in many cases.
GraphicsMagick (GM) is definitely loads faster than ImageMagick (IM) for some resize operations, but I doubt it's in the same league as Pillow-SIMD, just guessing though. I've had to do some large image (gigapixel) resizing, and IM keeps the entire image in memory, which causes it to hit swap. GM streams the image resize instead, so it doesn't have to swap, and it can finish in a few minutes instead of many hours.
I'd love to see vips in the benchmark comparison, perhaps a Halide-based resizer too as those are the fastest I've found so far. Perhaps GraphicsMagick too, as I believe it's meant to be faster than ImageMagick in many cases.