Genre+Individuality--More Rambling

I'm hoping this won't be as long as my other post.  In reference to Johnson's article, she wrote a very interesting sentence, "Individual personality is one of the most charming things to be met with" (Johnson 385).  However, I'm left to wonder, with the creation of genres (which I like to think translate almost to stereotypes in a "real-world" scenario), is there really any such thing as an individual personality?  Representation of an individual can be left up to a lot of interpretation, mostly based on the presentation of the group they associate themselves with.  Being Greek, I feel that I can apply this to a real world perspective.

Let's say I were to publish some amazing book (one can dream)--I'd be cast as a Greek writer, not only because of my name, but also because of the fact that I would probably have bits of my culture in writing as it is something so close to me.  Jeffrey Eugenides, author of The Virgin Suicides and Middlesex, writes with a prominent sense of his Greek Culture in Middlesex.  So, being typecast as a Greek writer as opposed to a writer, there'd be a list of associations that would then follow me.  Or, even just considering in me being a person, people learn I'm Greek almost automatically (with a name like mine, it's hard not to).  The common associations that follow me/my heritage (I know this since I'm asked about it right away) are usually related to: Greek Gods, financial crisis/apocalyptic living conditions people think all of Greece has, owning restaurants (my family owns 2), the movie My Big Fat Greek Wedding and having a big family in general, and riding donkeys around Greece (just to name a few).  While some of these stereotypes have a reason for being there (many of us do own restaurants), a majority are based on pop culture or historic presentation of Greek individuals which has led to a group mentality about what we ALL are like.  So when I read about Indian girls or black women, I wonder how true Johnson's claim is.  Yes, an individual personality is one of the most charming things to be met with, but isn't it also the most rare?  With so many associations behind each type of person, is there such thing as an individual personality or are we all just products--representations--of what the greater whole of society thinks we really are?