Least 'metal' of our metals

There are many close calls in a few genres.  I've been going through some of the gothic metal stuff, and the division between gothic rock and gothic metal can be so small. 

There are also some glam bands that seem more on the rock side than metal.  Many glam bands also tend to shy away from the metal aspect and prefer to be called a rock band.

I'm not familiar with that many folk metal bands, but there does seem to be some blur on the rock/metal boundary there as well.  Industrial too, though much of the industrial music I've heard has been heavy sounding.

Now without bias, without voting based on what genres you prefer, which genre of metal do you think has the least metal elements in it here? You may argue that every band is equally metal here, but try to look at this seriously. The Maidens and the Priests in my opinion hold the prototype for pretty much every metal band after that to base it off of. So give it your best shots.

I eliminated proto because by its very nature contains fewer metal elements than other genres. And I will wait to vote till a little later to eliminate bias from my poll.