I don’t know about other denominations, but for United Methodist, “장로, 권사” is a unique phenomenon found in Korean churches. There is no such thing in “American” Methodist churches, even though they are all under the same United Methodist umbrella.
Korean churches are quite unique in many ways. Some are positive, but when they are rooted in the fundamentals, things often go wrong. After all, the church leadership is responsible and it can only indicate lack of faith.