Disappointingly, looking at the mission selection and its interactions with other factions, Kumo Council isn't even a Criminal Feudal - just a standard Authoritarian one.
Came in like a lamb too on the face of it too. Last week's dysfunctional war ended without a shot being fired leaving Jaques the controlling faction (though I do note Jaques is second place in the influence percentages .. so maybe it's a temporary truce?) Anyway, they're in the nebula now, for good or for ill.