1: cloth, rags, sponges and rollers (as painting implements)
2: charcoal, chalk, conte and crayon
3: textured brushes
4: assorted custom brushes
5: distress textures (for "old look" on photos, or apply to metal, etc.)
6: textured (sandstone, etc.)
7: dynamic and textured brushes - maybe good for under-layer
8: nature-themed texture brushes
9: squiggle brushes, one looks like treasure trail
10: bristled and textured brushes
11: brushes for cloud and vapor trail effects
12: hair and fur
13: crayon and chalk brushes
14: sky effect brushes
15: brushes for generating textured or distressed surfaces
16: brushes for creating dust and trail effects
17: textured, dynamic brushes
18: nature-themed background brushes
19: hair and fur brushes for texture mapping (incl. eyebrows, beards)
20: skin texture brushes
21: brushes for creating hair effects (incl. straight and curly, arm hair, etc.)
22: brushes for emulating natural media effects
23: hair and fur brushes (incl. general body hair)
24: cloud, fog and smoke brushes
25: "elements of nature" textures
26: bristle brushes
27: skin texturing brushes
28: sky and ground effects (grass, etc.)
29: natural media brushes
30: animal-themed textures
31: textile-based texture brushes
32: human and animal skin and surface effects
33: chalk, charcoal, graphite
34: textured stone material brushes
35: creating clouds, fog and mist effects
36: hair and fur effects (incl.curly)
37: skin texture and skin feature brushes
38: textured 'artistic' brushes (some good for stylized hair)
39: wet, sloppy, and rough brushes
40: watercolor and other wet brushes
41: chalk, pastel, bristle brush
42: mist and background effects
43: hair and fur effects (incl. curly)