Special-order paint costs extra, but not every extra-cost paint is a special-order.
Chrysler charged $15 or so for High Impact paint, but they were generally regular-production colors.
But order FM3 (aka Panther Pink/Moulin Rouge) on a 1971 Charger and it'd be a special-order color because the Charger was ordered in a non-production color (because it was a 1970 color). Prob cost around $100 back then.
The semantics can be confusing, as demonstrated by this 1970 Oldsmobile item:
Notice the four "special-order" colors at the bottom? Yet they were regular-production colors that simply cost a few bucks extra, rather than colors that were not normally available. I consider them "extra-cost" colors in this case, as their RPO status didn't require special accommodations at the factory.
So most of the pics you posted are special-order colors, but I'm raising the possibility that Bahama Yellow and BBG (for the Rebel) were not. I'm more certain of the Mopar over the AMC, but I'll report back with more when I figure it out shortly.