In Prospero Burns we are told that each Primarch was created with a specific goal in mind. Admittedly, I haven't read all the books yet, but I was wondering if we had a clear definition of each role the Emperor intended for the Primarchs, here are a list of those we know, and those I suspect, as well as the rest of the known primarchs to keep it orderly

• Legion 1: Lion El'Jonson
• Legion 2: Missing Primarch
• Legion 3: Fulgrim
• Legion 4: Perturabo
• Legion 5: Jaghatai Khan
• Legion 6: Leman Russ - Executioner (Confirmed, Prospero Burns)
• Legion 7: Rogal Dorn - Defense expert (Suspected, various sources)
• Legion 8: Konrad Curze - Fear Bringer (Confirmed? Dark King and Lightning Tower)
• Legion 9: Sanguinius - Heir (Suspected, Prospero Burns)
• Legion 10: Ferrus Manus
• Legion 11: Missing Primarch
• Legion 12: Angron - Pure shock troops (Suspected, various sources)
• Legion 13: Roboute Guilliman - Military governer (Suspected, Know no Fear)
• Legion 14: Mortarion
• Legion 15: Magnus the Red - Sorcerors (Confirmed. Outcast Dead, Prospero Burns, Thousand Sons)
• Legion 16: Horus Lupercal - War Leader (Confirmed, Prospero Burns)
• Legion 17: Lorgar
• Legion 18: Vulkan
• Legion 19: Corvus Corax - Master Guerilla Warfare tactician (Suspected, Deliverance Lost)
• Legion 20: Alpharius Omegon - Espionage (Suspected, Deliverance Lost)

Anything from the information I am missing?