Thank you Misaki and Erika.
The fake 3D is an extension to the rotating diamond approach.
I didn't think animating the texture attachment would come out this good at first. I was surprised as well after animating.
I finally had some time this morning to do more experimentation. I have a full time job as an operator at a production plant and I have been gradually training myself into another profession like as a skeletal animator

. So, I now present you twin spheres. The outer sphere revolves around the central sphere. Also, the outer sphere is a descendant bone of the central sphere. I like to think the outer sphere is an appendage to the central sphere.

Video of ghosting the twin spheres:
https://www.deviantart.com/silverstraw/art/Spine-2D-Twin-Sphere-Ghosting-Test-901019884The outer sphere transition pretty smoothly around the central sphere in ghosting mode. I tried separating the hierarchy of the spheres but it was a x, y-coordinate translation nightmare. You would have to make sure the two spheres look like it was in contact at the same point in each frame. Also, the ghosting for it wasn't as fluid.