The rest of the patterns are drops or vendor items, but some are hard to get and limited. The Tribal Patterns I know of are the following:
Chimeric Boots (drop)
Chimeric Gloves (vendor)
Chimeric Leggings (drop)
Chimeric Vest (drop)
Devilsaur Gauntlets (vendor from Nergal in Un'goro Crater)
Devilsaur Leggings (rare drop)
Frostsaber Boots (vendor)
Frostsaber Gloves (drop)
Frostsaber Leggings (drop)
Frostsaber Tunic (drop)
Hide of the Wild (rare drop in Dire Maul)
Ironfeather Breastplate (rare drop)
Ironfeather Shoulders vendor from Gigget Zipcoil in The Hinterlands)
Warbear Harness (vendor from the Furbogs in Moonglade)
Warbear Woolies (vendor from the Furbogs in Moonglade)