Disclaimer: This question might not be suitable for this site, I am not sure beforehand.
Having seen this sketch on today's Google Doodle, I remembered that I have an innate crush for them - those having little details on facial expressions, and on shapes/body parts yet still expressive enough. They look like rough sketches but I hesitate to classify them as such. I wonder if you have any ideas on the naming of such drawings. What are they called?
Thanks in advance.
Edit: To be more illustrative I am adding the following sketches, which I assume similar to Google Doodle in terms of drawing and details. Let me know If I am wrong about this similarity.