There are Hidden Mickeys, many overlooked. But when it smacks you in the face (like your example of California Screamin' above), my friends had a name for that type of Mickey:
This occurred while my friends and I were walking through the Osborne Lights at the Studios a few years ago. I don't remember which friend came up with the name, but the consensus was that there were a LOT of decorative "conspic-u-mick" Mickeys all over the place.