Special Swords Yuto has in his Reality Marble

  Sword of the Netherlands Knight Siegfried, Balmung

Sword of the Knight of Rebellion Mordred, Clarent

Durandal ( think I spelled it right )

Sword of the King of Knights Arthur Pendragon, Excalibur Prototype ( it's just Excalibur but ill just add Prototype since Arthur is from Fate/Prototype and is the male version of Arturia Pendragon)