My favorite Saints are the Blessed Virgin Mary by far, then St. Thomas Aquinas and St. Augustine for their brilliance and the theological and philosophical instruction given to us the Church Militant.
Who are yours?
And if you know, what are some good books to read about these Saints?
For St. Thomas Aquinas and St. Augustine my favorite books are the Summa of the Summa by Peter Kreeft, and St. Augustine’s own work, City of God and Confessions.
edit: Also another one of my favorite Saints is St. Athanasius the Great for his championing the Catholic Faith against Ariansim, a heresy that plagued my life as a JW until I converted.