A bit late, but i decided to finish what i started in your first question in case you or someone else likes it.

If that shape is not plane below, but instead twists like the top, it is a solid mobius strip or a 'mobius ring'. For that case, I did a Geometry Nodes to generate one based on the inner and outer circle:

Before doing the Geometry Nodes, i was trying to imagine a way to get to the ring using the inner and outer circles:

Geometry Nodes:

It may look complicated, but at the end is just getting points from circles and creating the mesh.

A bit late, but i decided to finish what i started in your first question in case you or someone else likes it.

If that shape is not plane below, but instead twists like the top, it is a solid mobius strip or a 'mobius ring'. For that case, I did a Geometry Nodes to generate one based on the inner and outer circle:

Before doing the Geometry Nodes, i was trying to imagine a way to get to the ring using the inner and outer circles:

Geometry Nodes:

It may look complicated, but at the end is just getting points from circles and creating the mesh.