I also notice that furnish their upperdeck with economy seats, the opposite of its sister airline, KLM.

Not true for the entire fleet. I flew on F-GISA and F-GISB recently and both had business class on the upper deck. No idea what economy was like – didn’t go down/back there! :p

Seatguru is a reasonable place to see the varous configs for AF 744s (there are more than are listed there too, I think(, but it doesn’t tie those configs back to registrations unfortunately.

Andy