Twitterverse hypothesis is that these are aliases.
My guess would be that "Raven Chan" is "Rachel Chandler". Close enough that those "in the know" would recognize her.
So who has the initials EB and VS? Who might they be?
On the other hand, the Cannibal Club’s Events page- has a working link to a YouTube video of a woman “performance artist” named Diamanda Galas, who is very much real and topically... appears intertwined through mutual interests.
It is becoming obvious through web research that the Cannibal Club’s website builders and or site personalities are using phoney baloney images.
https://en.wikipedia.org/wiki/Diamanda_Galás
Bkmk Raven Chan - Cannibal Club
With CGI and makeup skills, just about anything can be faked. Both the Facebook page and the "Club" web site were up well before Q, so Q posting them as false flags is out. (I'm including that cause Q skeptics will make that claim.)
These pages predate Q, and are really out there. Some time was spent putting them up, and as another poster noted, on the "club" site, someone has been been keeping the domain name and hosting services paid up for over ten years. Looking up the Domain registrant information goes back to New Dream Network, which is just the domain registration service. The registrant organization is "A Happy DreamHost Customer." The domain was first purchased in 2008.
Finally, desensitization is critical. Think Walking Dead. How much has that one tv show desensitized us?
In olden days, a glimpse of stocking
Was looked on as something shocking.
But now, God knows,
Anything goes.