I create most of my illustrations in Clip Studio Paint. Of course Photoshop is also indispensable, but most of the drawings I create in Clip Studio paint. I find it faster and more immediate. Over the years, I've bought some brush sets that have gone into my daily work. There are many very good brushes, but I was always a little jealous of the crosshatch brushes in Photoshop. That's why I started to develop my own brushes for Clip Studio Paint.
The illustrations on this page are all made with my brushes. The ones used here and some more can be bought on gumroad.
Link: https://gum.co/sHQIT
Comparison of different brushes