It helps to reference the current version of the page (or provide a url link) as that section seems to have migrated to Chapter 64 - though it is unchanged even on the main development branch.
The table itself is extremely difficult to read: it would be more easily readable if the font was monospaced, but its not.
I'm reasonably confident that the equal sign is part of the second-to-last operator while the lone @> is the final operator. Mostly I say this because GiST doesn't do straight equality so a lone equal operator isn't valid.