How would I add a LMB + Key shortcut for the Blueprints graph?

I discovered a legendary thread somewhere where they noted that if you add:

+Node=(Class=K2Node_CustomEvent Key=E Shift=false Ctrl=false Alt=false

To BaseEditorPerprojectUserSettings.ini you can then do the LMB + E shortcut to create a CustomEvent quickly.

This possibility has consumed me.

I figured out that I could get this to do the same for LMB+R to create a RetriggerableDelay

+Node=(Class=KismetSystemLibrary:RetriggerableDelay Key=R Shift=false Ctrl=false Alt=false)

But the only ones that evade me are the generic add, subtract and multiply nodes.

I can’t figure out what their names are to call them, does anyone know?

+Node=(Class=K2Node_Multiply Key=M Shift=false Ctrl=false Alt=false)
+Node=(Class=K2Node_Subtract Key=S Shift=false Ctrl=false Alt=false)
+Node=(Class=K2Node_Add Key=A Shift=false Ctrl=false Alt=false)

This is what I naively thought it might be but that’s too easy it seems.

This would save my wrists a lot if I didn’t have to RMB click and type for these basic commands.