Can you make your point stick and tell us all of the different beliefs of each one??
Here is a (nonexhaustive) list of all the differing doctrines that have developed as a result of the Protestant paradigm of “I just need the Holy Spirit and my Bible to tell me what to believe!”
• Abortion
• Attend weekly services, don’t have to go to Church
• Baptism (sprinkling? Immersion? Infant? Adult? Sacrament? Ordinance? In Jesus’ name only? Using Trinitarian formula?)
• Charity or no charity (help one another or let them help themselves?)
• Church leadership, or no leadership
• Death/Soul Sleep
• Did Jesus use wine or grape juice at the Last Supper
• Divorce
• Drinking allowed, drinking not allowed
• Head coverings or no head coverings
• Health and wealth gospel
• Hell, or no hell
• Homosexuality
• Is God‘s Holy Name Jehovah
• Judge others, don’t judge others
• Lord’s day on Saturday or Sunday
• Music or no music (Singing or no singing)
• Once saved, always saved
• Ordination
• Predestination
• Rapture
• Sola scriptura/private interpretation
• The Eucharist (Communion)
• Tongues (some believe others are not saved if they don’t speak in tongues)
• Trinity vs. Unitarianism
• What’s a sin, what is not a sin
• When to celebrate the Lord’s Day
• Women pastors, no women pastors
Do the math and you will realize that there are hundreds of thousands of different permutations of the above that can result in hundreds of thousands of different denominations.
Think about it. Tens of thousands of different denominations is actually quite conservative.
This is exactly what you have proposed is impossible.
Do the math.
Or else, provide the statistic of the actual number you believe exists. (And please provide your source.)