Teen Gothic

Hi, I've been researching the subculture for a while now and one thing that I'm constantly getting confused about and that cause me a headaches is drawing a line when it comes to early goth bands. If we exclude the American deathrock scene, I know there's positive punk and post punk goth bands but also there are bands that are apparently just darker sounding post punk bands which people don't consider as goth and there's exactly where I'm having troubles with. Below I listed bands that I find confusing so if you guys can help me tell me which of those is goth and which isn't I would really appreciate it. Thank you.

Sad Lovers and Giants
The Snake Corps
The Chameleons
Pink Turns Blue
And Also The Trees
The Bolshoi
Flesh For Lulu
The Sound
New Model Army
Killing Joke
Lords Of The New Church
The Damned
Virgin Prunes
Red Lorry Yellow Lorry
Tones On Tail
Love And Rockets
The Glove
The Creatures
Dalis Car
Gene Loves Jezebel
Balaam And The Angel
Ghost Dance