Really only interested in something like Graphene, Lineage, or a Linux mobile tablet that can work with a typical Linux distro and display over USB-C. It is just a casual conversational ask. Maybe one of y’all has tried or knows the answer. I won’t use anything that runs google stuff or is a pain to load a custom ROM.
The max-boox-pro series had a HDMI-input to have an external eINK-screen and doubled as android laptop. Quite expensive though, and not that useful.