I seriously doubt it is Mobil. Most likely it is Warren/Coastal or Warren Performance Products-WPP. By the looks of the bottles, it appears to be Warren/Coastal. Those counter guys always have a different story and no real facts on this stuff.
I like the looks and price of the Global ATF they have there for 5 dollars per quart. Looks like an inexpensive one size fits all for those times when I need some ATF in a hurry.