AME invoice approvals use serial approvals with first responder wins

We have a requirement to use first responder wins in certain parts of our approval hierarchy either followed or preceded by serial approvals.

Example

Scenario1:  Entire AP team to get notification at first level and first responder wins. The invoice then follows a serial approvals for other departments.

Scenario 2: The invoice goes to one person in legal and after their approval it has to go to a group. Any one of them can approve this invoice and first responder wins.

We understand that different action types can be used during invoice approvals to enable pre list approval, post list approval, and chain of authority. My question is since we are not truly enabling parallel approvers and only looking at first responder wins for certain groups, can we use only one action type say chain of authority and use the voting method as first responder win with ordering mode as serial and get this functionality working?