Rotation is acceleration towards the center with a velocity perpendicular to the centre. Using a frame of reference that rotates along with the object doesn’t change what is physically happening to that object, it just affects the way you observe what’s happening. A rotating frame of reference is itself accelerating and each of those frames of reference are accelerating.

We don’t feel the Earth’s rotation because gravity is accelerating our entire body and surroundings at the same rate, plus it’s not just the spinning keeping us in equilibrium; the left over force holds us on the ground.

The other two feel different because it’s the structures that provide the acceleration towards the centre, which then pushes on our bodies where it makes contact, and then the structure of our bodies pulls the rest and you can feel the forces of things wanting to move in the direction of inertia but being pulled around the circle instead.

If rotating frames of reference weren’t accelerating, turning a car would feel no different from going straight.