Gragt
Arcane
The story setup reads like a bad fantasy fanfic,
Their stories were never anything special. What made up for this is that they never took things very seriously and they always injected humor in their games.
I haven't seen much of the OS story (mostly some dialogs and quests as it's still a work in progress) but so far it seems reminiscent of Divinity 1 and to be their usual kind of light-hearted fantasy, which I always find so refreshing compared to the many other developers that take it so seriously. On the other hand I saw more of the Dragon Commander story and C&C and let's just say that they got a very good mix of serious and humour and many situations and dialogs that the Codex will approve of.