1. 
   Microbe Methanobacteriota

   Candidatus Methanoperedens NameName close to Candidatus Methanoperedentaceae
2. 
   Microbe Planctomycetota

   Candidatus Kuenenia KeywordIts page mentions Candidatus
3. 
   Microbe Actinomycetota

   Candidatus Actinomarina KeywordIts page mentions Candidatus
4. 
   Microbe Planctomycetota

   Candidatus Brocadia KeywordIts page mentions Candidatus
   under 1% of healthy people
5. 
   Microbe Candidatus Saccharimonadota

   Candidatus Saccharimonadaceae KeywordIts page mentions Candidatus
6. 
   Microbe Candidatus Aminicenantota

   Candidatus Aminicenantales KeywordIts page mentions Candidatus
7. 
   Microbe Candidatus Moduliflexota

   Candidatus Moduliflexaceae KeywordIts page mentions Candidatus
8. 
   Microbe Actinomycetota

   Candidatus Planktophila KeywordIts page mentions Candidatus
9. 
   Microbe Chlamydiota

   Candidatus Renichlamydia KeywordIts page mentions Candidatus
10. 
    Microbe

    Candidatus Babela KeywordIts page mentions Candidatus
11. 
    Microbe Candidatus Saccharimonadota

    Candidatus Nanoperiomorbus periodonticus KeywordIts page mentions Candidatus
    1.5% of healthy people
12. 
    Microbe Thermoplasmatota

    Candidatus Methanomassiliicoccus intestinalis KeywordIts page mentions Candidatus
    under 1% of healthy people
13. 
    Microbe Candidatus Saccharimonadota

    Candidatus Nanogingivalis gingivitcus KeywordIts page mentions Candidatus
    under 1% of healthy people
14. 
    Microbe Thermoplasmatota

    Candidatus Methanogranum KeywordIts page mentions Candidatus
15. 
    Microbe Thermoplasmatota

    Methanomethylophilus KeywordIts page mentions Candidatus
    under 1% of healthy people
16. 
    Microbe Candidatus Saccharimonadota

    Candidatus Nanoperiomorbus KeywordIts page mentions Candidatus
    1.5% of healthy people
17. 
    Microbe Thermoplasmatota

    Candidatus Methanomethylophilus sp. 1R26 Unnamed strain KeywordIts page mentions Candidatus
    under 1% of healthy people
18. 
    Microbe Pseudomonadota

    Candidatus Fonsibacter ubiquis KeywordIts page mentions Candidatus
19. 
    Microbe Methanobacteriota

    Methanosphaera MeaningAbout Candidatus Methanoperedentaceae
    1.8% of healthy people
20. 
    Microbe Candidatus Saccharimonadota

    Candidatus Nanosynsacchari sp. TM7_ANC_38.39_G1_1 Unnamed strain KeywordIts page mentions Candidatus
    6.6% of healthy people
21. Research Scientific reports · 2022

    Reclassification of eight Akkermansia muciniphila strains and description of Akkermansia massiliensis sp. nov. and Candidatus Akkermansia timonensis, isolated from human feces.

    Akkermansia muciniphila

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
22. Research PloS one · 2025

    The ex vivo effects of ethanolic extractions of black cumin seed, turmeric root, and Ceylon cinnamon bark on the human gut microbiota.

    Faecalibacterium prausnitziiDysosmobacter welbionisCandidatus Cibiobacter qucibialis

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
23. 
    Microbe Candidatus Melainabacteria

    Candidatus Gastranaerophilales bacterium Unnamed strain KeywordIts page mentions Candidatus
    9.1% of healthy people
24. 
    Microbe Methanobacteriota

    Methanothrix MeaningAbout Candidatus Methanoperedentaceae
25. 
    Microbe Candidatus Saccharimonadota

    Candidatus Nanogingivalis KeywordIts page mentions Candidatus
    under 1% of healthy people
26. 
    Microbe Candidatus Latescibacterota

    Candidatus Latescibacter KeywordIts page mentions Candidatus
27. Research Acta parasitologica · 2017 Animal study

    PCR denaturing gradient gel electrophoresis as a useful method to identify of intestinal bacteria flora in Haemaphysalis flava ticks.

    Klebsiella pneumoniae

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
28. 
    Microbe Candidatus Sumerlaeota

    Candidatus Sumerlaea KeywordIts page mentions Candidatus
29. Research Applied and environmental microbiology · 2018

    Impaired Autophagy in Intestinal Epithelial Cells Alters Gut Microbiota and Host Immune Responses.

    Akkermansia muciniphila

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
30. 
    Microbe Chloroflexota

    Candidatus Chloroploca KeywordIts page mentions Candidatus
31. Research Animal science journal = Nihon chikusan Gakkaiho · 2019 Animal study

    Spatial variations in intestinal skatole production and microbial composition in broilers.

    Bacteroides uniformis

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
32. 
    Microbe Nitrososphaerota

    Candidatus Nitrosotenuis KeywordIts page mentions Candidatus
    under 1% of healthy people
33. 
    Microbe Candidatus Altarchaeota

    Candidatus Altarchaeum KeywordIts page mentions Candidatus
34. 
    Microbe Chlamydiota

    Candidatus Rubidus KeywordIts page mentions Candidatus
35. 
    Microbe Bacillota

    Candidatus Soleaferrea KeywordIts page mentions Candidatus
    under 1% of healthy people
36. 
    Microbe Candidatus Fermentibacterota

    Candidatus Fermentibacteraceae KeywordIts page mentions Candidatus
37. Research Biochemical and biophysical research communications · 2019 Animal study

    Clostridium butyricum miyairi 588 has preventive effects on chronic social defeat stress-induced depressive-like behaviour and modulates microglial activation in mice.

    [Clostridium] leptum

    MeaningAbout Candidatus Methanoperedentaceae
    PubMed ↗
38. 
    Microbe Pseudomonadota

    Candidatus Fonsibacter KeywordIts page mentions Candidatus
39. 
    Microbe Candidatus Melainabacteria

    Candidatus Gastranaerophilales KeywordIts page mentions Candidatus
40. 
    Microbe Candidatus Tectimicrobiota

    Candidatus Entotheonellaceae KeywordIts page mentions Candidatus

Research: PubMed, U.S. National Library of Medicine · citations link to PubMed