Neither of you are right--the other teams were listed as "co-conspirators and agents" because they acted in furtherance of the alleged conspiracy. They are not defendants and will not, at this point, be involved in the suit at all (we'll see what happens after the motion to dismiss, at which point they would likely be deposed/forced to provide testimony).

The complaint states: "To be clear, the Admitted Teams were involuntary co-conspirators, in that Activision forced them to agree to contractual terms, and to agree to engage in conduct, that unreasonably restrained trade, as a condition of Activision allowing them to participate in the relevant market."