The IB API currently has no way to request all model codes. If a way is added to get this data, then the following methods can be auto-subscribed for all model codes. The methods currently auto-subscribe to the "" model code.
def request_account_pnl(self, account: str = "All", model_code: str = "") -> Request:
def request_account_overview(self, account: str, model_code: str = "") -> Request:
def request_account_positions(self, account: str, model_code: str = "") -> Request: