Also known as pen tablet, digitizer tablet, graphics tablet or stylus tablet.
To some people they will be more familiar as “Wacom” because this has been the dominant brand for a lot of years, but there’s a plethora of brands out there: Huion, XP-Pen, Gaomon, Trust, Genius, etc…
This also include pen enabled devices such as pen monitors (Cintiq, Yiynova, et al) and “tablet” laptops (some Thinkpads, Fujitsu, HP, Dell and Samsung come to mind, there are others).
When the ARM port will be mature enough this can also include ARM tablets with specific pens.
So, any device that use a specific pen technology with at least pressure sensitivity.
It doesn’t include this kind of generic pens that work with any tablet or phone and are basically a substitute of a finger.
(Initially was going to call the category “pen tablets”, but nowadays with the ubiquity of tablets, any of the names that included the term “tablet” came with the risk of being mistaken for one of these.)