1. 
   Microbe Methanobacteriota

   Methanoculleus NameIn the family Methanomicrobiaceae
   under 1% of healthy people
2. 
   Microbe Pseudomonadota

   Hyphomicrobiaceae NameName close to Methanomicrobiaceae
3. 
   Microbe Methanobacteriota

   Methanoculleus thermophilus NameIn the family Methanomicrobiaceae
   under 1% of healthy people
4. 
   Microbe Methanobacteriota

   Methanosphaera MeaningAbout Methanomicrobiaceae
   1.8% of healthy people
5. 
   Microbe Thermoplasmatota

   Methanomethylophilus MeaningAbout Methanomicrobiaceae
   under 1% of healthy people
6. 
   Microbe Methanobacteriota

   Methanobrevibacter MeaningAbout Methanomicrobiaceae
   18% of healthy people
7. 
   Microbe Methanobacteriota

   Methanimicrococcus MeaningAbout Methanomicrobiaceae
8. 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 Methanomicrobiaceae
   PubMed ↗
9. 
   Microbe Bacillota

   Planomicrobium MeaningAbout Methanomicrobiaceae
10. 
    Microbe Methanobacteriota

    Methanobacteriaceae MeaningAbout Methanomicrobiaceae
11. Research Microorganisms · 2026 Review

    Anaerobutyricum-An Emerging Butyrate-Producing Genus with Potential Relevance to Host Health.

    Anaerobutyricum halliiAnaerobutyricum soehngenii

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
12. Research mBio · 2020

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

    Bacteroides thetaiotaomicron

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
13. 
    Microbe Thermoplasmatota

    Methanomassiliicoccus MeaningAbout Methanomicrobiaceae
    under 1% of healthy people
14. Research Frontiers in physiology · 2018

    Understanding the Representative Gut Microbiota Dysbiosis in Metformin-Treated Type 2 Diabetes Patients Using Genome-Scale Metabolic Modeling.

    Akkermansia muciniphilaIntestinibacter bartlettii

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
15. 
    Microbe Methanobacteriota

    Methanosarcina MeaningAbout Methanomicrobiaceae
    under 1% of healthy people
16. Research Gut microbes · 2024

    Archaea influence composition of endoscopically visible ileocolonic biofilms.

    Mediterraneibacter gnavus

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
17. 
    Microbe Thermoplasmatota

    Candidatus Methanogranum MeaningAbout Methanomicrobiaceae
18. 
    Microbe Methanobacteriota

    Methanolinea MeaningAbout Methanomicrobiaceae
19. Research Microbiology resource announcements · 2025

    Complete genome sequence of two Hominenteromicrobium mulieris strains CIP 112194 and CIP 112527, isolated from a human fecal sample.

    Hominenteromicrobium mulieris

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
20. 
    Microbe Methanobacteriota

    Methanobacterium MeaningAbout Methanomicrobiaceae
    under 1% of healthy people
21. 
    Microbe Thermodesulfobacteriota

    Desulfomicrobium MeaningAbout Methanomicrobiaceae
22. Research Microbiology spectrum · 2022

    Metabolic Synergy between Human Symbionts Bacteroides and Methanobrevibacter.

    Bacteroides thetaiotaomicron

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
23. 
    Microbe Methanobacteriota

    Methanothrix MeaningAbout Methanomicrobiaceae
24. 
    Microbe Methanobacteriota

    Methanocorpusculum MeaningAbout Methanomicrobiaceae
25. Research Gut microbiome · 2023 Review

    The butyrate-producing and spore-forming bacterial genus Coprococcus as a potential biomarker for neurological disorders.

    Coprococcus eutactus

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
26. Research EBioMedicine · 2019

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

    Klebsiella pneumoniaeEnterococcus faecium

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
27. Research Nutrients · 2023

    Faecalibacterium prausnitzii in Differentiated Thyroid Cancer Patients Treated with Radioiodine.

    Faecalibacterium prausnitzii

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
28. 
    Microbe Planctomycetota

    Planctomicrobium MeaningAbout Methanomicrobiaceae
29. Research Microbiology spectrum · 2026 Observational

    Gut microbial community structure, metabolic signature, and resistome in dyslipidemia: implications for cardiovascular disease management.

    Blautia obeumBacteroides caccaeBacteroides stercoris

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
30. 
    Microbe Methanobacteriota

    Methanosphaera cuniculi MeaningAbout Methanomicrobiaceae
    under 1% of healthy people
31. 
    Microbe Actinomycetota

    Aurantimicrobium MeaningAbout Methanomicrobiaceae
32. Research Saudi journal of gastroenterology · 2023

    Composition of the gut microbiota in patients with inflammatory bowel disease in Saudi Arabia: A pilot study.

    Mediterraneibacter gnavusDorea formicigeneransBifidobacterium adolescentis

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
33. Research Gut microbes · 2025 Randomized trial

    Systemic and gut microbiome changes with metformin and liraglutide in youth-onset type 2 diabetes: the MIGHTY study.

    Agathobacter rectalisBacteroides fragilisStreptococcus thermophilus

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
34. 
    Microbe Methanobacteriota

    Methanobrevibacter smithii MeaningAbout Methanomicrobiaceae
    18% of healthy people
35. Research Frontiers in immunology · 2023

    Association of gut microbiome and metabolites with onset and treatment response of patients with pemphigus vulgaris.

    Eubacterium ventriosum

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
36. Research Cell reports · 2024

    Bifidobacteriaceae diversity in the human microbiome from a large-scale genome-wide analysis.

    Bifidobacterium animalis

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
37. 
    Microbe Methanobacteriota

    Methanosphaera stadtmanae MeaningAbout Methanomicrobiaceae
    1.8% of healthy people
38. 
    Microbe Bacillota

    Planomicrobium okeanokoites MeaningAbout Methanomicrobiaceae
39. Research Frontiers in microbiology · 2024

    Insights from metagenomics into gut microbiome associated with acute coronary syndrome therapy.

    Klebsiella pneumoniae

    MeaningAbout Methanomicrobiaceae
    PubMed ↗
40. 
    Microbe Verrucomicrobiota

    Verrucomicrobium MeaningAbout Methanomicrobiaceae

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