From r/GuildWars2
Guardians/Ranger: Dragonhunter
Guardians/Thief: Archangel
Guardians/Engineer: Technomancer
Guardians/Warrior: Paladin
Guardians/Guardians: Guardians Plus
Guardians/Elementalist: Planeteer
Guardians/Necromancer: Deathknight
Guardians/Mesmer: Mindblower
Seems legit, we are slowly becoming every class in the game