Now, I would like to start off with this one statement: STOP ABUSING THE WORD "EMO". I could give you a long history of the term, and the genre, "emo", making references to Rites of Spring and the like. That would be boring, and I've stopped long ago trying to change the majority of scenester trend-followers into educated scenester trend-followers. But stop throwing the word around like you know what it means.
Secondly, none of the music you listed is emo, emocore, screamo, or any other weird emo derivitive I am not familiar with (xXpost-punk hardcore emo electronicaXx does not count, sir). Most of the bands you listed are pop, pop-punk, or punk-rock. This is all fine and dandy, but it is certainly not emo. In subsequent posts, you said you only used the word "emo" to define the music you listen to. This is not the case.
I will stop now, as I believe by this point I am repeating myself. It is late, and I am no good at ranting. Goodnight, sir.
EDIT: Shitfuck, the guy above me beat me to it! And sounded less like an asshole! Kudos to you, guy above me!