Looking to this new 'sketch' style, what would you call it and good sources to learn?

Recently been drawn to this style, but not sure of a name for it. Has anyone seen any good tutorials on how to sketch and colour like this? Combination of sketchy/rough lines and objects not fully coloured.

https://preview.redd.it/k4jwr6yyrytg1.png?width=659&format=png&auto=webp&s=36c1d7ed6baf2b3807774a099e4e4aaa979976c5

https://preview.redd.it/nc0uquhzrytg1.png?width=251&format=png&auto=webp&s=31eba19d649e504e9d739d28940f9d810d509569

https://preview.redd.it/463qcjcgsytg1.png?width=557&format=png&auto=webp&s=ad58ba0ef1000a6a601c18e3387427130b3ff06c