The help center itself has only 4 categories: Start here, Data, Analysis, and Manage Account. The other 4 links they have on the help center homepage are linking to useful resources outside of the help center.
Given Mixpanel's documentation is required for starting to use the product, links to it are placed at the top navigation menu.
We reviewed quite a few articles and we couldn't find any CTAs (calls to action) placed inside the articles. The content of the articles is purely educational and is not designed to drive product-related traffic.
GIFs are used heavily on some articles where the user needs to understand how to perform a sequence of steps, like this one explaining how Lookup Tables work. GIFs are not a standard feature present on all or most of the help articles and they are used along with videos in many cases.