From my chats with various WGs, here's my understanding of the groups.
There was the group of WGs working under the management of Louise. She's retired and it's now being run by Gabriella. Danielle was part of this group, but no longer working. Other examples in this group include Sexy Young Jade, Scarlett.
I gather Chanelle (now ~diamond~)used to work for Gabriella, but now runs an independent group out of Lincoln. You can see the other girls under their group name Happy Endings on aw, and they're recognizable by the ~ .... ~ signs in the profile name.
Both follow the same rate of 130/hour and the same stupid non-punter friendly policy of having no contact information, calling you from a private number just before the punt.