Temperature-based tags (No tag implies a biome is temperate)
  HOT
  COLD

Tags specifying the amount of vegetation a biome has (No tag implies a biome to have moderate amounts)
  SPARSE
  DENSE

Tags specifying how moist a biome is (No tag implies a biome as having moderate humidity)
  WET
  DRY

Tree-based tags (No tag implies a biome has temperate trees, such as Oak)
  SAVANNA (dry, desert-like trees, such as Acacia)
  CONIFEROUS (snowy trees, such as Spruce)
  JUNGLE (jungle trees)

Tags specifying the nature of a biome
  SPOOKY
  DEAD
  LUSH
  NETHER
  END
  MUSHROOM
  MAGICAL
  OCEAN
  RIVER
  WATER (general tag for all water-based biomes)

Generic types which a biome can be
  MESA
  FOREST
  PLAINS
  MOUNTAIN
  HILLS
  SWAMP
  SANDY
  SNOWY
  WASTELAND
  BEACH

Deprecated tags, kept for compatibility
  DESERT (replaced by SANDY)
  FROZEN (replaced by SNOWY)