None of those are "OG" though. They're all crosses of OG's with other strains.
Back in the day when OG hit the streets, growers were charging a premium because of high demand, but also because of the low yield. True to form OG's do not stack like that, staggered golf balls is what they produce. To "remedy" this, some attempted to cross the OG to maintain it's high/flavor/smell/potency, but also increase it's yield. I've grown out strains that people called "OG", but admitted they were crosses of Sour D, ChemD, and the like. Most of those looked identical to the pictures you're posting. A while back I had a cut that was making the rounds as "SFV OG", but that one was clearly a cross also.
OG crosses go back nearly as far as OG (intentional and unintentional mixes popped up real quick), so there are some oldies still floating around and their "OG" label stuck. However, at the legit clubs out here, they will quickly point out an OG cross that is being called "OG". If I remember right, those early crosses were dubbed "OG Kush" (because they were crossed with a "Kush" type plant, or because it resembled "Kush" nugs). OG ain't Kush, and Kush ain't OG, but that moniker stuck.
The nose you described also points to the cross coming through.
Not knocking any of your cuts, because they are beautiful plants, but the "OG" label wouldn't fly over here.
Maybe I don't know my shit, maybe I do. What I do know, we're talking "92 OG" and OG's that date back to that time. I was smoking "92" in '92, I got to see the plants, this is at a time when a lot of you were in diapers, or maybe not even born yet. Not going "authority figure" on anyone, just sayin'.
Does it even matter what it is? Looks like some damn fine herb.