I can't be assed to make an image, but here's what I would pick for a basic list of essentials.
>General Christian
Holy Bible
Philip Schaff's Ante Nicene, Nicene, and Post-Nicene Fathers series
The C.S. Lewis Signature Classics
The Last Superstition
Josephus's Jewish Wars
>Catholic
Catechism of the Catholic Church
Summa Theologica
True Devotion to Mary
Denzinger's Enchiridion
The Imitation of Christ
>Orthodox
The Philokalia
The Way of the Pilgrim and the Pilgrim Continues His Way
The Ladder of Divine Ascent
The Triads of Gregory Palamas
The Path to Salvation
>Lutheran
The Book of Concord
On The Bondage of the Will
The Examination of the Council of Trent
Confessio Catholica
The Conservative Reformation
>Calvinist
Institutes of the Christian Religion
Summa totius Christianismi
The Works of Jonathan Edwards
Systematic Theology
Sermons of George Whitefield
Sadly, I don't know enough about Arminianism to come with any books for it, but it deserves it's own section as well.