If anyone was curious about what canon’s model is in reference to:
In Norse mythology, the einherjar (Old Norse “single (or once) fighters”) are those that have died in battle and are brought to Valhalla by valkyries…The einherjar prepare daily for the events of Ragnarök, when they will advance for an immense battle at the field of Vígríðr; the battle which the “ein” (here meaning single-time) refers to…Valhalla is the place of Odin. It is told in Norse mythology that einherjar are those with golden auras only seen by valkyries. The einherjar are the Warriors trained by Asgardia. (Wikipedia)