[nonameiguess]

Happens in some artistic fields. Rodin didn't personally sculpt all of his sculptures. He directed the effort, but it was too much work for one person. I've seen Tom Clancy novels continue getting published even though he died over a decade ago. I think there are living authors doing the same thing, farming out production to ghost writers and just signing their name to the end product.

There are famous examples in advice columns, sort of. I don't know that any of them have ever been written by different people at the same time, but they've maintained stable personas and names even as the writers have moved on or died. The original founder of the Dear Abby column was famously the twin sister of the second iteration of Ann Landers and they feuded for the rest of their lives over it. They're both dead now but the columns go on using the same byline name.