That's one of them. Even that is something that you don't usually do outside Germany. To get to the next level I recommend to put weighted produce to the end or just after items that are not straightforward to pack.
Otherwise I end up with 2 pieces of fruit in 1 bag, 1 bottle of soap by itself in another bag, followed by again more fruit in the 3rd bag… It's a fun fragmentation problem.
Other differences I noticed: Time at checkouts was at least 2-3 times longer than in Germany, even at the better german supermarkets cashiers are much faster. Also, in Germany I never encountered cashiers to comment on the goods I bought (I don't mind much, but it still felt a bit like an intrusion in privacy. I once bought a glass of Ghee - a common ingredient in southern german cuisine - and the cashier went on and on about how unusual it was that a white guy would buy it).
In the US service employees are required to be fake "friendly." This was an attempt at that. I hate it myself.
I always associated ghee with India, I had no idea it was used in Germany too.
> > in the order that they should go in the bag
> is something that you don't usually do outside Germany