Hi Gloydean,
When trying to classify a different machine like the cardio twister that isn't listed, the best thing to do is to find the closest resembling movement. The trwister is actually a stepper by nature, so I would recommend that you catagorize it as "stepper moderate" instead of spinning.
Keep up the great work on your cardio, and make sure you are also incorporating weight training into your weekly regime as well.
Keep me posted.
Good Luck,
Paul