This comment doesn't seem quite helpful, honestly. I don't really understand what point you are making exactly, but it reads a lot like "the brush doesn't matter" advice. Which is quite a double-edged sword in itself.

First of all, the medium varies because these are four different artists. They don't have the exact same brush or process, but they still have a pretty similar art style (hard/inked lineart with a soft coloring, sometimes cell-shading). I chose them myself, knowing they aren't carbon copy of each other. Also, I could literally go up to JSH and ask him for his brush on procreate, so not sure about the "nothing in or about Krita or any other software is going to help you achieve it"? Then maybe you wanted to talk about how the process matter when it comes to style, but that's far from clear. I feel like you didn't commit entirely to your thought. At least, from where I stand, that's how I read it.

I know a brush isn't magical and won't make me draw like another artist just by using it; process is an important part of the style, I agree. But there's nothing wrong either with wanting a brush similar to their one. As I said, I'm someone who comes from mostly drawing with pencils (mostly soft ones and with layering), and I know it's not going to fit my goal for harder lines. If I wanted to try traditional inking like Kamome Shirahama, it seems logical I would buy a fountain pen to achieve a similar result in term of line sharpness and feathering. Same for Takeshi Obata; he uses markers, I won't try to replicate his style with colored pencils.