I don't see it, personally, just standard face and ears. And chattiness isn't exclusive to any breed. Looks like your run of the mill (cute) domestic shorthair.
Yeah just black. Black hair turning red is common, called rusting or sun bleaching, so he's not a tortoiseshell or anything. Black hair turning a bit grey (either the tips or the base/undercoat) or having some white hairs is also common. Especially with long hairs.
Your cat's fur is normal, that's what a tabby typically looks like (the second fur photo), and she has a broken mackerel pattern, not spotted. The kitten (I presume? First fur photo) looks to be a smoke, which is less common but not unusual. It's not indicative of Egyptian Maus though and I...
Those aren't rosettes, he looks like a broken mackerel tabby, or possibly spotted from the looks of one photo even though the back stripe is solid, not sure. Either way, they're not rosettes. He's a Domestic Shorthair, black (usually called brown) tabby with white.
Yep, she's a black (also called brown) tabby tortoiseshell and white domestic shorthair. She's adorable and does have quite some ears on her. I wonder if she'll grow into them or if they'll stay.
I don't think that has anything to do with the tabby genes darkening the white body. There are loads and loads of lynx points with white or near-white bodies, just the same as solid points. Same how there are loads of solid pointed cats with dark bodies for the reasons I already mentioned.