The Sleepy Hills Biome
Known as Good Dream Plains in 1.15 and lower. It is also the only Dream biome in 1.15 and lower.
The Shameful Plains Biome (1.16+)
The Wasted Forest Biome (1.16+)
The Good Dream Plains Biome (1.16+)
The Dreamy Forest Biome (1.16+)
The Nightmare Hills biome
This is the only Nightmare biome in 1.15 and lower.