There is no other mediator. There is only one mediator, Jesus Christ.
There is no other intercessor. There is only one intercessor, Jesus Christ.
There is no other reconciler. There is only one reconciler, Jesus Christ.
All this is substantiated by Scripture. The RCC's hogging of the honor which belongs to God alone and distributing it to Mary and assorted dead saints is against Scripture, against God's laws, and demeans the work of Christ on the cross.
All in all, not so good.
By what Scripture?
As you interpret it.