Access LiveView assigns from another process

When mounting my live view, I register it as a participant in a running GenServer.

def mount(_params, _session, socket) do
  MyGenServer.add_participant(self())
  {:ok, socket}
end

This allows me to easily work with a list of participants very easily. I now introduced some JS dependency which creates a unique ID for each participant/rendered live view and pushes it back to the server, which stores it in its assigns. However for my app to properly work, I would need a list of these unique IDs across all my participants. This can be done via :sys.gen_state, but feels very wrong.

MyGenServer.participants() 
|> Enum.map(fn participant → 
  :sys.gen_state(participant)
  |> Map.get(:socket)
  |> Map.get(:assigns)
end)

Is there an official way to get assigns from a live-view process from outside of the process?