Ethergoth was a term I first came across in Voltaire's What Is Goth?. The name itself is an abbreviation of 'ethereal' Goth, relating to the preferred genre of music for these Goths, ethereal wave or ethereal darkwave. Voltaire describes this subset as, "Serene, thoughtful and creative, ethergoths are defined by their affinity for ambient music, darkwave and classically inspired Gothic music. Ethergoths are more likely to be found sipping tea, writing poetry and listening to the Cocteau Twins than jumping up and down at a club."
However from day to day, ethergoth clothing is often more simple than that associated with other styles, perhaps incorporating a black T-shirt, black skirt or trousers (velvet trousers would look great), and black shoes or boots. Whilst researching this subset, I found a website that mentioned ethergoth fashion combining black clothing with light, airy colours such as lilac, although I am not sure how accurate this may be.
Make-up-wise, lighter colours are certainly often seen; lilac, white, powder blue etc are often paired with black liner (possibly with some swirly designs). Lips are often left bare or a simple red, brown or plum lipstick is used (depending, of course, on eyeshadow colour - I am not implying that ethergoths wear clashing make-up!).
As ethergoth is more practical and toned-down than other versions of Goth fashion, it may be one of the best looks for young Gothlings at home with their parents, or something to bear in mind for corporate Goths who are becoming tired of their pinstriped suits.
Likely ethergoth interests include tea (I wonder how many ethergoths own a fortune-telling tea cup?), poetry, folklore, curling up with a good book, and/or intellectual pursuits such as fine art or history. They may also be interested in more 'spiritual' things like angelology.
Goth gossip/free download: Fans of Creature Feature will be pleased to know that you can grab the first single from Curtis Rx's side project Rufus Rex at his Bandcamp page for free (or pay what you think the track is worth). It's called Rise Lazarus Rise, and you should totally check it out.