Stereotypes only work if the target audience understands the subject to begin with. That's the basis of a stereotype. If you've never been exposed to WoD, you have no preconceptions of what a Brujah is versus a Toreador. How can you stereotype a member of the clan if you don't even know what the clan is about?
"Archetypes" however are more universal and don't necessarily require an understanding of the source material to understand the themes that underpin it. Brujah are tough guys. And Nines is the embodiment of that archetype. Short spoken, stoic, ready for violence. Velvet Velour is an archetype of the sultry, feelsy artist type. (Or maybe she's a caricature.) Smiling Jack is an archetype of a Gangrel: wild, rebellious, filthy.
By understanding the archetype, you understand the broader themes of the clans they belong to.
Beyond that understanding, then you arrive at stereotypes, and the desire for unique characters who refute or at least contrast the dominant themes of their clans. Where you end up with a Redneck Ventrue or a New York uppercrust Brujah.
Are Nossies actually any good at stuff? At first glance it seemed to me that they need to invest so much stuff into pure "survive the modern world" skills/stats that they were kinda handicapped if you wanted to do anything that wasn't explicitly "avoid notice".
Yeah, Stealth is their bag. But you gotta apply stealth to the world of the Masquerade rather than just considering how it helps them operate in the mortal world. They make great scouts, spies, saboteurs and assassins, even in places that would constitute a Masquerade breach if they're caught. Depending on the edition Obfuscation IIRC is good for more than just clouding people's awareness of you. And invisibility can make up for a lot in tabletop WoD, where you had to skip on all the combat brawn.
But yeah. I'd never opt to play a Nosferatu. I'd rather not have to work that hard to participate in what's going on. My brother played a Nos in LARP Vampire the Masquerade and he quite enjoyed all the shenanigans he could get away with by simply going "I'm not here anymore."