1. 
   Microbe Methanobacteriota

   Methanobacterium NameName close to Methanobacteriales
   under 1% of healthy people
2. 
   Microbe Methanobacteriota

   Methanobacterium sp. MB1 Unnamed strain NameName close to Methanobacteriales
3. 
   Microbe Methanobacteriota

   Methanobacteriaceae NameName close to Methanobacteriales
4. 
   Microbe Methanobacteriota

   Methanobacterium formicicum NameName close to Methanobacteriales
   under 1% of healthy people
5. 
   Microbe Methanobacteriota

   Methanobrevibacter KeywordIts page mentions Methanobacteriales
   18% of healthy people
6. 
   Microbe Methanobacteriota

   Methanosphaera KeywordIts page mentions Methanobacteriales
   1.8% of healthy people
7. 
   Microbe Methanobacteriota

   Methanobrevibacter smithii KeywordIts page mentions Methanobacteriales
   18% of healthy people
8. 
   Microbe Methanobacteriota

   Methanobrevibacter boviskoreani KeywordIts page mentions Methanobacteriales
9. 
   Microbe Methanobacteriota

   Methanothermobacter KeywordIts page mentions Methanobacteriales
10. 
    Microbe Methanobacteriota

    Methanosphaera cuniculi KeywordIts page mentions Methanobacteriales
    under 1% of healthy people
11. 
    Microbe Methanobacteriota

    Methanobrevibacter wolinii KeywordIts page mentions Methanobacteriales
    under 1% of healthy people
12. 
    Microbe Methanobacteriota

    Methanosphaera stadtmanae KeywordIts page mentions Methanobacteriales
    1.8% of healthy people
13. 
    Microbe Methanobacteriota

    Methanobrevibacter arboriphilus KeywordIts page mentions Methanobacteriales
    under 1% of healthy people
14. 
    Microbe Methanobacteriota

    Methanobrevibacter woesei KeywordIts page mentions Methanobacteriales
    under 1% of healthy people
15. 
    Microbe Methanobacteriota

    Methanobrevibacter oralis KeywordIts page mentions Methanobacteriales
    under 1% of healthy people
16. 
    Microbe Thermoplasmatota

    Methanomassiliicoccus MeaningAbout Methanobacteriales
    under 1% of healthy people
17. Research Dermatology and therapy · 2024

    The Role of the Gut-Joint Axis in the Care of Psoriatic Arthritis: A Two-Sample Bidirectional Mendelian Randomization Study.

    Faecalicatena fissicatena

    MeaningAbout Methanobacteriales
    PubMed ↗
18. Research Microorganisms · 2023

    Methanomethylophilus alvi gen. nov., sp. nov., a Novel Hydrogenotrophic Methyl-Reducing Methanogenic Archaea of the Order Methanomassiliicoccales Isolated from the Human Gut and Proposal of the Novel Family Methanomethylophilaceae fam. nov.

    Eggerthella lenta

    MeaningAbout Methanobacteriales
    PubMed ↗
19. Research Frontiers in cellular and infection microbiology · 2024

    Refining the relationship between gut microbiota and common hematologic malignancies: insights from a bidirectional Mendelian randomization study.

    Agathobacter rectalisAnaerobutyricum hallii

    MeaningAbout Methanobacteriales
    PubMed ↗
20. Research Nutrients · 2024 Observational

    Changes in the Gut and Oral Microbiome in Children with Phenylketonuria in the Context of Dietary Restrictions-A Preliminary Study.

    Faecalibacterium prausnitzii

    MeaningAbout Methanobacteriales
    PubMed ↗
21. Research EBioMedicine · 2019

    Co-culture of Methanobrevibacter smithii with enterobacteria during urinary infection.

    Klebsiella pneumoniaeEnterococcus faecium

    MeaningAbout Methanobacteriales
    PubMed ↗
22. Research Scientific reports · 2023

    A mathematical model of Bacteroides thetaiotaomicron, Methanobrevibacter smithii, and Eubacterium rectale interactions in the human gut.

    Agathobacter rectalisBacteroides thetaiotaomicron

    MeaningAbout Methanobacteriales
    PubMed ↗
23. 
    Microbe Bacillota

    Roseburia faecis MeaningAbout Methanobacteriales
    68% of healthy people
24. Research Medicine · 2025

    Causal association between Parkinson disease, gut microbiota, and constipation: A Mendelian study.

    Agathobacter rectalis

    MeaningAbout Methanobacteriales
    PubMed ↗
25. Research Journal of hazardous materials · 2025 Animal study

    Anaerobic digestion at hyper-mesophilic temperatures: Microbiome and antibiotic resistome in full-scale agricultural biogas plants.

    Enterococcus faecalis

    MeaningAbout Methanobacteriales
    PubMed ↗
26. Research mBio · 2020

    Syntrophy via Interspecies H2 Transfer between Christensenella and Methanobrevibacter Underlies Their Global Cooccurrence in the Human Gut.

    Bacteroides thetaiotaomicron

    MeaningAbout Methanobacteriales
    PubMed ↗
27. 
    Microbe Thermoplasmatota

    Methanomethylophilus MeaningAbout Methanobacteriales
    under 1% of healthy people
28. Research Microbes and environments · 2020

    Microbial Community Analysis of Anaerobic Enrichment Cultures Supplemented with Bacterial Peptidoglycan as the Sole Substrate.

    Escherichia coli

    MeaningAbout Methanobacteriales
    PubMed ↗
29. Research Gut microbes · 2024

    Archaea influence composition of endoscopically visible ileocolonic biofilms.

    Mediterraneibacter gnavus

    MeaningAbout Methanobacteriales
    PubMed ↗
30. 
    Microbe Methanobacteriota

    Methanocorpusculum MeaningAbout Methanobacteriales
31. Research Microbial pathogenesis · 2026 Animal study

    The role of microbiota in bovine tuberculosis: Characterizing bacterial communities across lungs, gut, and lymph nodes.

    Eubacterium ventriosum

    MeaningAbout Methanobacteriales
    PubMed ↗
32. 
    Microbe Methanobacteriota

    Methanosarcina MeaningAbout Methanobacteriales
    under 1% of healthy people
33. Research Annals of intensive care · 2023

    Bridging gut microbiota composition with extended-spectrum beta-lactamase Enterobacteriales faecal carriage in critically ill patients (microbe cohort study).

    Sellimonas intestinalis

    MeaningAbout Methanobacteriales
    PubMed ↗
34. 
    Microbe Bacillota

    Hydrogenoanaerobacterium MeaningAbout Methanobacteriales
    50% of healthy people
35. Research Cell metabolism · 2026

    Microbial aldehyde-alcohol dehydrogenase degrades metformin to limit therapeutic response in type 2 diabetes.

    Anaerobutyricum hallii

    MeaningAbout Methanobacteriales
    PubMed ↗
36. Research Biotechnology for biofuels · 2018

    Genome-centric metatranscriptomes and ecological roles of the active microbial populations during cellulosic biomass anaerobic digestion.

    [Clostridium] leptum

    MeaningAbout Methanobacteriales
    PubMed ↗
37. 
    Microbe Methanobacteriota

    Methanothrix MeaningAbout Methanobacteriales
38. 
    Microbe Actinomycetota

    Actinomyces gerencseriae MeaningAbout Methanobacteriales
    1.5% of healthy people
39. Research International journal of antimicrobial agents · 2018

    Composition of the intestinal microbiota in extended-spectrum β-lactamase-producing Enterobacteriaceae carriers and non-carriers in Thailand.

    Bacteroides uniformis

    MeaningAbout Methanobacteriales
    PubMed ↗
40. 
    Microbe Pseudomonadota

    Enterobacteriaceae MeaningAbout Methanobacteriales

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