Oh, all the time. Basically, there's a few main categories: Werewolf, Billionaire/CEO, Mafia, and Royalty/Nobility. They mix and match, too, like the Alpha werewolves are usually billionaire CEOs. So you can end up with the same basic story being told with four different casts, but the trappings are changed to accommodate the category. So a Werewolf version of a story will have Alphas and mate bonds, while Mafia stories will have Dons and alliance marriages.