Don't believe it does but I don't know why. The subject has come up constantly in the Darrell Brooks trial. Additionally he is claiming to be a sovereign citizen. Any case law you know of that settles that question?
One example in civil proceedings is a class-action lawsuit, another is co-plaintiffs or plaintiff(s) et al. Yet another example in criminal proceedings is The People vs Defendant or Defendants. However, the concept of how many plaintiffs can carry forward a charge or how many can be named in one case is a bit of a separate concept than that of sovereign citizenship or not sovereign citizenship, which can also be an individual person, or if more than one plaintiff, individual people.
I am neither well-versed enough nor knowledgeable of any particular case law that backs any of this up. My knowledge is purely at a layman’s level. Additionally, with the advent of having worked in law enforcement for more than two decades prior to retiring, I was exposed to this type of subject matter in my professional capacity in interaction with the government attorneys who handled cases that were filed by my department.
I do not recognize and therefore know nothing about the particular ongoing case in your description field.
~