Question: what are the different types of drawing styles?
Answer: Rough sketches. Steering away from perfection, this can be a great way to really practice your skills with a series of quick sketches. ... 
Doodling / scribbling. ... 
Industrial / architectural. ... 
Caricature. ... 
5. Anime / manga. ... 
Realism / photo realistic. ... 
Pointillism. ... 
Surrealism.