There’s a mystery series by SJ Rozan that features two detectives, Lydia Chin and Bill Smith. They’re written in first person but she alternates between the two with each book. I was absolutely fascinated by how they see themselves versus how they see each other. You get some of that switching perspective within a novel but maybe it’s not as noticeable when you’re quickly getting both views of the same events. When Lydia narrates she’s a little dingy and somewhat cowed by her overprotective Chinese mom and brothers. Bill thinks she’s this incredibly smart badass. Lydia thinks Bill has way more layers than he actually does. Rozan does a good job of showing these perspectives and not just telling it. This series started in 1995 and her efforts to age the characters and add modern technology have been spotty imo but I still love swapping perspectives for the entire book.