Go in Edit > Preferences > Addons.
Search for the Pie Menus addon, and inside the description you can find the list of all the menus brought by this addons, their shortcuts, as well as checkboxes to disable the ones you don't like.
For all the other Pie menus in Blender, you can go in Edit > Preferences > Keymap and search for "Pie". It will show every key binding for every existing pie menus in every editor and interaction modes.