(A/N: This list took so damn long to make...)
[Saber]
Grade 1: Jason
Grade 2: Chevalier d'Eon
Grade 3: Gilles de Raise
Grade 4: Bedivere
Grade 5: Mordred
Grade 6: Fairy Knight Gawain
Grade 7: Arthur
Grade 8: Yagyu Munenori
Grade 9: Unknown
[Lancer]
Grade 1:Gareth
Grade 2: Leonidas
Grade 3: Hector
Grade 4: Diarmuid Ua Duibhne
Grade 5: Cu Chulainn
Grade 6: Fairy Knight Lancelot
Grade 7: Ereshkigal
Grade 8: Karna
Grade 9: Unknown
[Archer]
Grade 1: Billy, the Kid
Grade 2: William Tell
Grade 3: David
Grade 4: Euryale
Grade 5: EMIYA
Grade 6: Fairy Knight Tristan
Grade 7: Ishtar
Grade 8: Gilgamesh
Grade 9: Unknown
[Caster]
Grade 1: Mozart
Grade 2: Charles Babbage
Grade 3: Paracelsus von Hohenheim
Grade 4: Avicebron
Grade 5: Medea
Grade 6: Nitocris
Grade 7: Queen of Sheba
Grade 8: Merlin
Grade 9: Unknown
[Berserker]
Grade 1: Frankenstein
Grade 2: Asterios
Grade 3: Beowulf
Grade 4: Penthesilea
Grade 5: Heracles
Grade 6: Ibaraki
Grade 7: Lancelot
Grade 8: Arjuna
Grade 9: Unknown
[Assassin]
Grade 1: Mata Hari
Grade 2: Kato Danzo
Grade 3: Jack the Ripper
Grade 4: Stheno
Grade 5: Hassan-i Sabbah (Variable)
Grade 6: Shuten
Grade 7: Kama
Grade 8: Koyanskaya of Light
Grade 9: Unknown
[Rider]
Grade 1: Bartholomew Roberts
Grade 2: Edward Teach
Grade 3: Habetrot
Grade 4: Medb
Grade 5: Medusa
Grade 6: Achilles
Grade 7: Ivan the Terrible
Grade 8: Quetzalcoatl
Grade 9: Unknown