| canada | manitoba | congregibacter | genus | 0 | 2 |
| chile | | uncultured om60 clade bacterium | species | 2 | 0 |
| china | | congregibacter litoralis | species | 2 | 0 |
| china | | uncultured om60 clade bacterium | species | 1 | 0 |
| germany | | congregibacter litoralis | species | 2 | 0 |
| germany | | congregibacter litoralis kt71 | no rank | 9 | 0 |
| japan | | om182 bacterium d4 | species | 3 | 0 |
| mexico | yucatan | uncultured congregibacter sp. | species | 1 | 0 |
| sweden | | uncultured sar92 cluster bacterium | species | 1 | 0 |
| united states | hawaii | gamma proteobacterium himb55 | species | 1 | 0 |
| united states | oregon | gamma proteobacterium htcc221 | species | 1 | 0 |
| united states | oregon | marine gamma proteobacterium htcc2148 | species | 31 | 0 |
| united states | oregon | marine gamma proteobacterium htcc227 | species | 1 | 0 |