There is a lot of confusion around anarchism, because it is a negative description: It’s a collective without leader, without governing institutions. It doesn’t say much about how this collective organizes instead. So you could call the chaotic state after a government coup Anarchy. But that isn’t what anarchists are talking about and I don’t think that is what OP meant either.
Anarchy as a deliberate system is when a group of people decides to work or live together without selecting a leader or any other form of government, instead resolving decisions that affect everyone together. In that sense it is not an interim state, a leadership-vacuum just waiting to be filled. Although of course Anarchy can transition into another system by various means, but so can every other system as well.
The order and way actors appear in the credits is, as you alluded to, often part of the negotiations and contracts. Seems like these kids had better contacts than the others. That could be because they have more experience, their parts were supposed to be more prominent and changed (although I doubt that with these character names) or they simply had the better agent(s).