Double Gold BJJ -
KingBodhi - My guess would be GFT. They have a ton of guys that left other teams to join them based on business deals GFT set up for them. More than half their team is recruited from other teams. GFT has tons of affiliates in the US when just a few years ago there were only a few. As these gyms grow and contracts expire I could see GFT affiliates breaking away to make more cash.
What were the business deals like/about? I'm curious.
I know of a few GFT reps that actually got their black belts from Gracie Barra, GFT recruited them to move them to the US to head schools in the quickly expanding GFT affiliation market. Gyms in Brazil are filled with skilled black belts, but in gyms filled with black belts there aren't tons of opportunity to make a living teaching BJJ in Brazil. GFT needs people to run affiliations in the US, so they recruit from other teams.
I also know of GFT affiliations in the US recruiting from other teams with the promise of sponsorship for tournaments, free gis, and other perks for joining them. It's simple economics.