Another point for Joey's Light influence coming from A. Claire instead of her, which I think a lot of people are missing; Jude has it too. The symbol on his shirt is a beam of Light, he uses a flare gun (a thing specifically designed to create Light more than damage, as is the flashlight), and his main focus is information and bringing secrets to Light.
In a way yeah but it’s not as easy to pin-point Jude’s own attachment to A. Claire, Joey’s is very explicit, but while Jude does also seem to have taken her loss really heavily, his relationship to her is not explored enough. I kinda wanna see more about him in Hauntswitch!