| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Candidatus Bathyarchaeia | 2 | 3 | 3 | 23 |
| Candidatus Culexarchaeia | 1 | 2 | 2 | 7 |
| Candidatus Korarchaeia | 1 | 1 | 3 | 7 |
| Candidatus Nezhaarchaeia | 1 | 1 | 2 | 3 |
| Conexivisphaeria | 1 | 2 | 3 | 8 |
| Methanosuratincolia | 2 | 2 | 5 | 16 |
| Nitrososphaeria | 4 | 6 | 14 | 247 |
| Tardisphaeria | 1 | 1 | 1 | 2 |
| Thermoprotei | 6 | 10 | 41 | 445 |