I’m planning a story like that! It’s about a girl who has no existence of her own and has to journey to find one (eventually by stealing another being’s life force) and it’s going to switch from third person, to first, and even a bit of second- where the protagonist is narrating and will talk like she’s speaking directly to the reader. It’s not my immediate work in progress so I don’t have anything specific plotted out, but I think subtly shifting the perspective would be SO fun
Kinda similar, but there are books with a narrator who isn’t a character, so it mostly reads like third person but with some glimpses that the limited character wouldn’t know - it’s called free indirect discourse, Jane Austen was a master of it, Northanger abbey is a particularly good example