Which bands are emo?

A lot fo different people claim many different bands are emo. To me it ums up to about this:

Mainstream Emo: listened by 12 and 13 year olds, adults who dont know what emo is, and girls that also listen to Fergie and Nelly Furtado.
eg: Fall Out Boy, Cute Is What We Aim For, P!ATD, Paramore, etc.

Screamo: Heavier tunes listened my metalheads or emos that just like metal.
eg: FFTL, Chiodos, Alesana, Escape The Fate, etc.

Punk Emo: listened to by random kids of any ages
eg: Simple Plan, Angels and Airwaves, New Found Glory, etc.

Acoustic Emo: Listened by often very not emo people who are interested in Folk and softer tunes, or anybody else who wants to make a change
eg: Bright Eyes, Death Cab For Cutie, Secondhand Serenade, etc.

Rock Emo: Has more of a rock feel with emo lyrics. Can go from mainstream to underground.
eg: Billy Talent, Count The Stars, Funeral For A Friend, Taking Back Sunday

Ready-To-Sell-Emo: There are some bands that belong in the other catigories that belong here also. This is mostly to recondnize bands that are mostly known for their good looks then actual musical talent (I’m already hearing the complains of people).
eg: Three Days Grace, Hawthorne Heights (though I find them ugly), Boys Like Girls, Caretl, etc.

 You might agree or disagree with me, but just to prove that there are many subcultures in a subculture. So to all you people who go around calling someone a poser, well they do listen to emo music. Its just different form what you listen to.