That’s a question I get quite often so I’ll take the opportunity to develop about it :)
I got a few ones actually ! For small chunky lines I have a chalk one which is just tweaked from the PS basic one. The same for large color layout. I tweaked it years ago so I have no idea how I did but it’s basically PS tweaks and a chunky texture added to the brush .
The rest are mostly brushes I bought from the incredible Kyle Webster’s store http://www.kyletwebster.com .
Hope that helps !