Certain names end up in cycles, falling out of favour with the privileged as aspirational types adopt it for their children and then it gets tired , falls out of fashion and then the privileged revive it. But this would rarely or never happen for names that haven't been popular with the upper classes - so you won't see Kevin getting into this cycle I'm sure but you could just with a name like Nigel (even though it has Kevin-like connotations). The whole topic becomes one of snobbery, superficiality and judgementalism but it's remarkable how widely understood the associations often are.