Native American Art
1. Pacific Northwest region 
Materials used : Wood, stone, copper, paper, canvas, glass                                and precious metals.
Patterns: bears, ravens, eagles, humans, thunderbirds and sisiutls.
Products : Totem poles, bentwood boxes, canoes, masks, household items, paintings and sculpture.
2. Great Plains Region 
Materials used:Cloth, feathers, parts of animals like hair and teeth, berry juices for dying
Patterns : animals and celestial symbols
Products : Tipis, dress to match personal preference, quills, paintings
3.Southwest region
Materials used: Clay, paints, beads, precious metals, yarn
Patterns: Geometrical patterns, painting depicting nature
Products: Pots, baskets, handwoven blankets and rugs, hand-craved figures, jewelry, toys, paintings
Hence, from the above information, we see that 
Totem Poles is the most common type of Native American Art produced  in The Pacific Northwest region.
Clothing is the most common type of Native American Art produced in the Great Plains region.
Pottery is the most common type of Native American Art produced  in The  Southwest region.