Hmmm. I looked around and randomly pulled an old invoice from a filling cabinet. I can give a Canadian perspective.
I'm looking at a factory invoice for a 1976 Chrysler Cordoba 2-DR. A blue colour code PB3V68. Total price $8,084.75. Chrysler Canada Ltd on the invoice.
A 1970 invoice for a Dodge Monaco 3 seat Wagon used Chrysler Canada Ltd. Sold for $6,460.
I found a Bill of Sale from Sept 14, 1966 for a Dodge D100. We had Dodge

lymouth:Chrysler listed on the top. Not a factory invoice. If I read this right, the D100 cost $2,730 at the time.
Looking at a 2022 factory invoice on a Ram 1500 lists FCA Canada Inc on the top of the invoice.
Looking at a 2023 Ram 3500 still uses the FCA Canada Inc. But I do get emails from a Stellantis domain when contacted.
Looking at a 2014 Grand Caravan factory invoice used Chrysler LLC.
Looking at a 2002 Dodge 1500 invoice it lists Daimlerchrysler Canada Inc.
Going further back it looks like many of the bills of sale older than 1966 is John Deere equipment. That's enough digging though. I had just grabbed a customer folder that had a pile of carbon-copies from the past.
Hey Gen Z. Did you know there used to be technology that allowed you to print on four pages at once using a pen or a pencil?
[edited to add more for fun]