Also, what kind of drawing are they interested in doing? Are they more interested in digital painting or illustration?
For painting, you'd probably want a tablet that's more targeted toward that type of art. You might want the ability to use different tools. For example, I have a brush that looks like an actual paintbrush except the bristles are made of the same material used in the rubber ends of touch pens. It doesn't work with my iPad model, unfortunately, but is supposed to work on newer models. Anyway, the point is that if I had a compatible model and I wanted to paint with a brush, I have a brush. You can simulate a brush with a pen, of course, using the settings on the device, but if you want to use an actual brush, then I would have that option.
On the other hand, if they are more interested in illustration, then you want a tablet that supports vector art. Something that will run Affinity Designer or Adobe Illustrator or similar. Then, their art is all vectors which can be scaled without loss of resolution and it can also be more easily edited and so on.
Of course, many devices can do either, but if there's a preference, you'd be best served by looking for devices that best support that type of art.
