AMD could be introducing its own big.LITTLE-esque hybrid CPU architecture in 2024. Codenamed Strix Point, these will be Zen 5 Ryzen 8000 APUs fabbed on TSMC's 3 nm process. Not much information is available about Strix Point at the moment considering we are still three years away from launch. However, the grapevine is that AMD has fixed Strix Point's iGPU performance target and has incorporated "bigger changes" to the memory subsystem.
https://www.notebookcheck.net/AMD-Zen-5-Ryzen-8000-Strix-Point-APUs-to-sport-hybrid-big-LITTLE-esque-CPU-architecture-will-be-fabbed-on-TSMC-3-nm-process.535951.0.html