[Marcello]

Unit 782, ambush sappers uses weapon 156 RPG-7VR.
I purposefully did not mention it because I thought it could fill the role of "limited availability, high end RPG" for the insurgents. A PG-7VR was probably used to disable at least one Abrams after 2003.

"Do I assume that since you didn't mention the RPG-16 and PRG-18 also in the OOB that these were available ??"

RPG-16/18 were available in some numbers (not huge but some) to the iraqi military and have been found in insurgents caches. There are pictures floating around of RPG-18 toting insurgents.