One important canvas is missing: The canvas of ideas and concepts. I think it is a canvas in the sense that it is an image of reality just more abstract than the canvasses matching perceptions.

For me this concept canvas is the dominant one. Ideas and concepts matching experience (to avoid the word perception which implies a more immediate relation) suggest themselves quickly and I work with very abstract and interpedendents concepts easily.

Thinking about it I'd guess that (some) people also have a rich canvas for social relationships, i.e. strong intuitions - "imaginations" - about friends, family relations and such and can probably paint a picture of how a group of people works.