That's really great that you are so enthusiastic towards disability sports and classification:
I came across an article on web stating six different impairment groups stated in International Paralympic Committee, namely:

  • Amputees
  • Athletes with cerebral palsy
  • Blind or visually impaired athletes
  • Spinal cord injured athletes
  • Athletes with an intellectual/learning disability
  • Other athletes (les autres) with a physical impairment, who do not fit into any of the above five groups