GraphVariables for StateMachine

After quite some time I wanted to get back into Unity and saw that it now had an included VisualScripting/Node solution and wanted to try to create an enemy AI using it. And so far it is pretty easy to work with.
I’m quite comfortable with C# so I will only be using for AI, since that is easier for me to solve visually.
Now to my question:
The GraphMachines / the different states of the StateMachine have the option to keep a variable as Graph-Variables, but there seems to be no option for the StateMachine-Level.
This would be useful for Variables that are used across different States, like a Detection-Radius, etc.
Obviously I could use Object-Variables for this, but would need to add the variables to every Object that uses this StateMachine manually.
Is there a way to automatically add Object-Variables, maybe with some default values when I add a StateMachine to a GameObject?

I think your best bet here would be to make a prefab. If you create a macro asset, you can share the same graph variables across instances, but assume you want same variable setups rather than shared variables. If you want a setup of variables unique to each instance, you could either use an Embed with Graph variables and prefab the gameobject, or create the Object variables together with a macro asset and prefab the gameobject.