I've noticed that some aircraft are missing a couple of markings. The British Airways A350 is missing the WBH over the cockpit mask, and the United 737-9 Max (the normal 900s might be missing it too) is missing the 737-9 sticker that goes in front of the nose landing gear. There may be more, but I haven't seen them yet.
A little comparison
In game
And in real life
It's not that big of a deal, but im just putting it out there.