If you look at the post that I referenced in there (a matplotlib page detailing the colourmaps that are available in that library) there is one that is actually

If you look at the post that I referenced in there (a matplotlib page detailing the colourmaps that are available in that library) there is one that is actually called `rainbow` that's very similar to the one proposed by the google team. They do compare against viridis and inferno, you're correct -- but comparing a high-contrast colour map directly to a perceptually uniform one is an unfair comparison. They should compare against, for instance, the rainbow one from there, cubehelix, or even the twilight ones that I suggested. Of course it's always good to have other colour maps to choose from, but the similarity between this proposed one and the ones that already exist makes it seem like they've only quickly glanced at other work in the field.