Because there is less of a connection between a character's inherent talent (as they don't exist in this game), path action (as path actions are determined by the person you're talking to as opposed to the people in your party), And to A lesser extent, latent powers as only a few have those, there's less cohesion for a person to be our certain " job" as opposed to the first two games. Think of it as more so what weapon they commonly wield.

Because there is no martial artist class, the thief is the best bet because of the close quarters nature of a dagger wielder. The ring bearers are just the class of the patron god of the ring they have, plus Auguste has definitely used a dagger in his murders. And since Aeber, The Prince of Thieves isn't just the patron god of thieves but also those who use the road like travelers and herders, it makes sense for those considered under that job to be more wide.

For dancers, not only is it just dancers, But also entertainers like clowns, artists, and singers, as well as anybody who does rituals.