Dudes claiming they are "old stock" or "heritage" Americans. They'll even call other white people who's ancestors weren't here before the Civil War "ellis islanders" and invaders.
As someone who's ancestry has partially been here since the 1690s.. it's a crock of shit and silly as fuck.
Mind you, often when people talk about tracing family back to that era or even earlier, it doesn’t mean that they have a full tree with every relative listed out. It means they found one path up the tree that leads back to an ancestor with a well-documented lineage.