| Non-human intelligent beings (NHIBs) | |
|---|---|
| Extraterrestrial beings (NHIBs) | |
| Interdimensional beings | |
| Underground civilizations and beings | |
| Underwater beings | |
| non-terrestrial human beings | |
| Extraterrestrial humans | |
| Cryptoterrestrial humans | |
| Cryptids | |
| Land cryptids | |
| Aquatic cryptids | |
| Aerial cryptids | |
| Underground cryptids | |
| Exotic fauna | |
| Extraterrestrial fauna | |
| Exotic plants | |
| Spiritual and metaphysical beings | |
| Spiritual entities | |
| Philosophical concepts of being | |
| Practitioners and theorists | |
| Related topics | |