Problem

There is a tutorial on choosing colormaps in MPL on the online docs here, which I frequently point others to when they want to know what colormaps are available in MPL.
It also provides references to palettable and colorcet as great sources for properly made colormaps (which I fully agree with).
However, what I am missing, is references to MPL's own cmocean (or, at least, I know that MPL is hosting it) and CMasher.

Suggested Improvement

Given the popularity of both packages and that most people I know usually tend to use either one of these when looking for colormaps, I think it would be beneficial if both packages are mentioned as well in the tutorial.
After all, the more properly made colormaps people can find, the lower the chances are that someone will use one that is not properly made or well-suited for their specific application (like jet).

I did find that the tutorial can be found here, so if required, I can add these references myself.

Matplotlib version

• Operating system: Windows 10/Ubuntu 20.04
• Matplotlib version (import matplotlib; print(matplotlib.__version__)): 3.4.1
• Matplotlib documentation version (is listed under the logo): 3.4.1