I added a scan of "PR2" for the trio of draft guys. From a quick search, it looks like the "Promo" set is just those three cards: PR1, PR2 & PR3.
There were also "Preview" cards, with the 1 of 17,500 design on back. Preview cards include: Alexandre Daigle, Manon Rheaume, Barry Richter, Teemu Selanne, Alexei Yashin... maybe more?
Manon has that other NNO "promotional" card as well & that Kariya without a back scan may be similar (looks like his "Top 10" base card, but without the foil stamp - so likely a promo too).
Hope that helps.