After getting on the Mandalorian season 2 bandwagon during the Christmas break I gathered some stock models to practice more Arnold rendering. I used long strip quad lights for red up-lighting, mesh light for the lightsabers and an HDRI for the exterior. I added atmosphere volumes for the lightsabers with a very high eccentricity value to get the glow falloff on the lightsabers, next time I'll try the Arnold Decay Filter and see if that gives me a quicker solution for glow.
I used models via Google Warehouse and CGTrader as well as PBR textures from GameTextures