Focus on The Last Judgement (Vasari and Zuccari) and analyze the Description.
The frescos cover 10,500 sq ft (980 m2) though other sources state 14,000 sq ft (1,300 m2) and 3,600 m2 (39,000 sq ft)The  painting consists of  five concentric levels and eight triangular segments (spicchi).
From top to bottom starting from the central false lantern surrounded by the 24 Elders of the Apocalypse, the painting is organised as follows:
The 24 Elders of the Apocalypse. There are three in each segment.
Choirs of Angels. Which features angels with a variety of musical instruments and holding the instruments of the Passion, including a cross, a chalice, a column, a crown of thorns, dice, a flagellum, nails, a pitcher for vinegar, a pincher, a robe, a sponge, and a sword.Cherubim and Seraphim with “INRI – ECCE HOMO”
Thrones with the cross
Power with the column
Archangels with the nails and pliers
Angels with Christ's robe
Principalities with the crown of thorns
Dominations with the sponge
Virtues with the lance and chalice
Christ, Mary and Saints
Christ, Mary, John the Baptist, various Florentine saints, Adam and Eve
Apostles and Evangelists
Popes, Bishops and Priests
Virgins and members of the religious orders
The people of God
Emperors, kings and princes
Doctors of the Church
Martyrs and warrior saints
Virtues, Gifts of the Holy Spirit and Beatitudes. These depict the seven virtues, the gift of the Holy Spirit and the seven beatitudes.
Hope, Charity, Faith
Brotherly love, “Blessed are peacemakers”, Wisdom
Prudence, “Blessed the meek”, Understanding
Temperance, “Blessed the pure of heart”, Piety
Humility, “Blessed the poor”, Fear of the Lord
Counsel, “Blessed the merciful”, Justice
Continence, “Blessed those who hunger for justice”, Knowledge
Patience, “Blessed those who mourn”, Fortitude
Capital Sins and Hell. This level features a large Lucifer with each segment is dominated by a cardinal sin.
Time (represented by an allegorical figure of a person with an hourglass), Nature and the Seasons (each represented by a child) and Death before the Church Triumphant.
Envy
Sloth
Lust
Pride
Greed
Gluttony
AngeOn the segment in front of the central nave, there are only three levels in order to provide space for a large figure of Christ between the Madonna and St. John the Baptist.The artwork contains 700 figures, consisting of 248 angels, 235 souls, 21 contemporary personalities, 102 religious’ figures, 35 damned, 23 cherubs, 14 monsters, 13 portraits and 12 animals. Among the contemporary characters that Zuccari depicted were the Medici patrons (Cosimo I de Medici and his son Francesco), the emperor, the king of France, Borghini, Giambologna, Vasari, and other artists, and even himself and many of his relatives ( such as deceased brother Taddeo) and friends.
fresco