You probably don’t include all of them since some are misprints or sample prints, but here all cards with other backs I know of besides the ones you already have in your list:
- Matchprint (already mentioned by you, but added for completeness - here the back)
- Teach Sets (although most have the old or new Japanese back, they are in irregular shapes and sometimes partially cut off - i.e. see Oshawott in the linked article)
- Tropical Present (with this back), New Year Present (with this back), and New Century Present (with this back)
- The Crystal-type Box toppers which are transparent and therefore lack a back
Oh, and the Miniature Phone Charms apparently have regular (although very tiny) backs. And the Acrylic lottery cards have regular backs as well.
And then you of course have misprints like this Gastly (although I’m not sure if I should consider this it’s front or back 
). Ik, ik, you won’t include misprints, otherwise miscut cards or black and white back imprinted stamps could be considered as well. Just thought it was worth sharing. 
Greetz,
Quuador