More compact than the GPD Win Max, One-Notebook's OneGx1 is now up for pre-order in both 4G and 5G variants, but it doesn't come cheap: the US$839 model only sports WiFi, 8 GB of memory, and 256 GB of internal storage, and the price goes as high as US$1,318 for the 5G + 16 GB + 512 GB model.
https://www.notebookcheck.net/OneGx1-now-up-for-pre-order-7-inch-US-840-Alienware-Area-51m-inspired-5G-support-and-Intel-Amber-Lake-CPU-in-tow.478156.0.html