Another update. This is a view of the EPI network as it currently stands. 69305 nodes, 125935 connections between nodes. I've colored it with modularity community detection and clustered it loosely so that you can get a clear view of all the segmentation of users between their respective groups. A connection on this graph is defined here as one user being on another user's friends list, or a user being a member of a group.
Brown (16.28%) - feminization and raceplay groups
Purple (10.96%) - fart fetish groups, also furry-related
Teal (8.15%) - groups that sell clothing that's meant to be skimpy or basically just non-clothes so your avatar can be nude
Blue (6.55%) - more feminization and raceplay
Green (6.13%) - all feminization
Orange (5.85%) - all clustered around one big group with no description or store items. Members list seems to indicate it's another raceplay group
Magenta (5.36%) - all clustered around a different big group. Can you guess what it's about? That's right, it's about raceplay
Dark green and off to the left (5.25%) - himbo groups for gay bear enjoyers
The non-colored nodes are generally also members of some disgusting fetish group or other, but they get smaller from here and this covers most of the network. When you see the little gray clumps, those tend to be groups that split off from other, larger groups.
An interesting takeaway I find from this data, which doesn't really come as a surprise but a confirmation, is that these nodes are all pretty strongly linked to one another, and there isn't a clear boundary between any two types of degenerate behavior. For example, if you started in the dark green cluster on the left, which generally seems to be for gay males, you can easily trace a path to any other fetish content, despite the fact that the graph's content is straight content for the most part. In fact, the diameter of this network as it currently stands is 10, meaning that if you pick any random point in the network, you're no more than 10 steps away from any other point in the network. I'm making an assumption here, but it seems to me that this confirms the idea that the focus of these groups is more about intentionally corrupting what should be innocent, and that the fetish content is a means to do that but not the primary focus.