And the thing is, a miko is because there are shrines. That's why you have one, and not something else. And it's not full time, of course, it's technically an extra duty. Tae's real job, for example, is being a cadet at the end of school doing OJT and getting qualified as an SO, like a real miko goes to junior high or high school or college.
But miko I think are chaplain adjacent, of course. And I do see it as a position with a qualification, rather than a real occupation.
I kinda derailed it out of the gate with a chaplain adjacent thing. Chaplains, which I guess the topic really is, would be a full time job. And if there was a Shintō chaplain, it would be separate from them (although they would assist the chaplain)