Someone I find attractive is usually all these things rolled into one. All of those wonderful qualities that get you squirming in your seat. If you’re a dork, you're a hot/pretty/beautiful dork. If you're a little indie nerd, then you're a hot little pretty indie nerd that's beautiful, and so on... Works with anyone; Businessmen, pizza delivery boys, the plumber. If you're hot, you're hot.
I've never been into any particular kind of guy, but somehow I always end up with the skinny, boyishly charming guys. To me, that's the hottest/prettiest/most beautiful.