It's weird, I do keep finding references to NL#1 being an IBL. Hm, I tend to believe you though Smoky.

Here's some more I found, poking around:
Original Haze=IBL
Afghan#1=IBL
Durban Pison=IBL
Malawi Gold=IBL
Power Plant=IBL (not PPP)
Skunk Passion=IBL
Master Kush=Stabilized hybrid
Original Blueberry=Stabilized hybrid

Additions/subtractions?