I have a 2nd generation XP Pen Artist 13. It’s a great tablet and I’ve managed to make it work with my Steam Deck too.
But…
It’s basically an external monitor with pressure sensitive surface, so still less portable than an actual stand alone table. So I’m wondering if there is a tablet with a pressure sensitive screen and battery free pen that either comes with Linux or can install Linux on.
The programs I use for making art are Krita, Gimp, and Blender 3D.
The Lenovo Yoga 6 works surprisingly well. I got it to replace a surface book for my daughter and wasn’t really sure what parts of the hardware would be supported, but literally everything I tested works (the only thing I haven’t tried is the fingerprint reader) and the included stylus is amazing in krita as well as just generally. The tablet mode works well, and tent mode is more convenient when it’s on a desk (screen rotation requires the iio-sensor-proxy package). Battery life is decent; it gets around 6-7 hours with moderate use. I’d recommend using it with KDE.
https://www.lenovo.com/ca/en/p/laptops/yoga/yoga-2-in-1-series/yoga-6-gen-8-(13-inch-amd)/len101y0027