My current most used brushes for drawing, not including texture overlay brushes of which I have. So many. Often I modifiy these brushes to have a 'Color Jitter' per stroke, affecting Hue. Around 10-15 or so in the amount.
CSP ASSET STORE
Artemus Pencil [Specifically 'Big Boy'] - FREE - ID: 1758182 - Lineart, Sketch, Details. I often keep it at 21 pixels. My everything Brush.
Bakery - FREE - ID: 1995830 - Painterly textures, Lineart [see Tiramisu].
Blender's Hand -
10 CLIPPY - ID: 1921334 - Painterly Shading, textures, Coloring.
Block Brush -
10 CLIPPY - ID: 2085345 - Colors.
Colored Pencil -
10 CLIPPY - ID:2132830 - Colors, Painting.
Eevee's Colorful Chalk - FREE - ID: 2139261 - Coloring.
Filbert (Dual) - FREE - ID: 1842465 - Colors, Painting.
Fink Pen -
10 CLIPPY - ID: 2184197 - Lineart.
Hue Change Oil Brush -
10 CLIPPY - ID: 2020516 - Colors, Painting.
Momo Storybook Set - FREE - ID: 1761190 - Colors, Painting.
Oil Pastel (On Paper) - Coloring. Painterly. <- Unable to find.
Shale Brush [Specifically Shale Replica] - FREE - ID:1995145 - Coloring.
TOMBOW - FREE - ID: 2003696 - Lineart.
Realistic Pencil - FREE - ID: 1746317 - Colors.
S著色筆 [None-English] - FREE - ID: 2071356 - Lineart.
かさかさ補助ブラシ [None-English] - FREE - ID: 2150370 - Colors.
かさっとぺたっとブラシ [None-English] - FREE - ID: 2149250 - Colors.
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OUTSIDE CSP BRUSH PACKS
May include variations for other programs other than CSP.
The Dawner Brushes -
$ - Various
Tomb of Null Stipple Beast, Natural Materials Textures -
$ - Various
True Grit Texture Supply: KolorMarc Studio Markers -
$ - Various
DAUB Brushes, Packs -
$ - Various
PharanBrush/Krupuk. -
$ - Specifically the 'DryBlend Tzu SP' which is included in the Krupuk marker set, I think.