We're using Unity (Quarter Circle Games). I'm happy to give an interview and some of my lighting/PP techniques. You can view out game here: https://store.steampowered.com/app/907500/The_Peterson_Case/
This is a fan project, like the Lord Inquisitor was. GW has absolutely nothing to do with it!
Check out a plugin for Unreal that extends the functionality of the standard graph editor, allow you to create and edit node graphs more quickly and with more comfort.
Here is a quick overview of the tool from the developer:
Left click and drag on empty space while holding down alt will break all connection wires along its way(note that this is an experimental feature, if you are dragging too fast, some connection wires may still stay connected).
It is also worth mentioning that the tool supports blueprints, behavior tree graphs and animation blueprints. You can find more details on the script here.