Who do you think the adventists are? They are non-rc's.
The beliefs listed below are agreed upon by any serious evangelist that the gospel message is at the core of Christianity. And that they are essential to the Christian faith. Any person or denomination doesn't matter who they are; who removes or changes one or more of the core belief's will soon find their religion is null and void and they are practicing an empty and dead faith.
Any denomination that claims to be Christian but deny one or more of the essentials of the Christian faith is to be avoided doesn't matter who they are or the name of the denomination.
Jesus is the Son of God and is equal with God
Jesus lived a perfect, sinless life
Jesus was crucified to pay the penalty for our sins
Jesus rose from the dead
We are saved by the grace of God; that is, we cannot add to or take away from Christ’s finished work on the cross as full payment for our sin
God's written word is infallible
Jesus is fully God, and fully man at the same time
There must be a spiritual transformation
There is only one God who eternally exists as three distinct Persons — the Father, Son, and Holy Spirit. Are co-equal and co-eternal, one in essence, nature, power, action, and will.