Pencil drawing lora. It is pretty versatile with styles and levels of details. I think DreamShaper or even Humans (if you want to do portrait drawings of all sorts of people from all over the world) are great checkpoints to use.
You can use these in your prompts:
hatching texture
crosshatching texture
graphite media
grayscale
blue pencil media
brown pencil media
red pencil media
sketch
simple sketch
smooth shading
Experiment and have fun. :)