Acetivibrio Acetoanaerobium noterate , Acetofilamentum rigidum, Acetogenium kivui, Acetomicrobium, Acetothermus paucivorans,, Acidaminobacter hydrogenoformans, Anaerbioospirillum succiniciproducens, , Anaerorhabdus furcosus ,Anaerovibrio, Bacteroides, Butyrivibrio, Centipeda periodontii, Fervidobacterium, Fibrobacter, Fusobacterium Haloanaerobium praevalens, Halobacteroides halobius, Ilyobacter, Lachnospira multparus Leptotrichia buccalis, Malaonomonas rubra, Megamonas hypermega, Mitsuokella, Oxalobacter formigenes, Pectinatus, Pelobacter Porphyromonas, Provotella, Propionigenium modestum, Propionispira arboria, Rikenella microfusus, Roseburia ceciola, Ruminobacter amylophilus, Sebaldella termitidis, Selenomonas, Sporomusa, Succinimonas amylolytica, Succinivibrio dextrinosolvens, Syntrophobacter wolinii, Syntrophomonas, Thermobacteroides, Thermosipho africanus, Thermotoga, Tissierella praeacuta, Wolinella, Zymophilus

Gram negative aerobic or microaerophilic rods and cocci

Acetobacter, Acidiphilium, Acidomonas methanolica, Acidothermus cellulolyticus, Acidovorax, Acinetobacter, Afipia, Agrobacterium, Agromonas oligotrophica, Alcaligenes, Alteromonas, Aminobacter, Aquaspirillum, Azomonas, Azorhizobium caulinodans, Azotobacter, Bacteroides, Beijerinckia, Bordetella, Bradyrhizobium japonicum, Brucella, Chromohalobacter marismortui, Chryseomonas luteola, Comamonas, Cupriavidus necator, Deleya, Derxia gummosa, Ensifer adherans, Erythrobacter longus, Flavimonas oryzihabitans, Flavobacterium, Francisella, Frateuria aurantica, Gluconobacter, Halomonas, Hydrogenophaga, Janthinobacterium lividum, Kingella, Lampropedia hyalina, Legionella, Marinobacter hydrocarbonoclasticus, Marinomonas, Mesophilobacter marinus, Methylobacillus glycogenes, Methylobacterium, Methylococcus, Methylomonas, Methylophaga, Methylophilus, Methylovorus glucosotrophus, Moraxella, Morococcus cerebrosus, Neisseriaceae, Neisseria, Oceanospirillum, Ochrobactrum anthropi, Oligella, Paracoccus, Phenylobacterium immobile, Phyllobacterium, Pseudomonas, Psychrobacter immobilis, Rhizobacter daucus, Rhizobium, Rhizomonas suberifaciens, Rochalimaea, Roseobacter, Rugomonas rubra, Serpens, Sinorhizobium, Sphingobacterium, Taylorella equigenitalis, Thermoleophilum, Thermomicrobium, Thermus, Variovorax paradoxus, Volcaniella eurhalina, Weeksella, Wolinella, Xanthobacter, Xanthomonas, Xyella fastidiosa, Xylophilus ampelinus, Zoogloea ramigera

Gram negative vibroids:
Alteromonas, Aquaspirillum, Azospirillum , Bdellovibrio, Campylobacter Cellvibrio mixtus , Halovibrio variabilis , Helicobacter, Herbaspirillum seropedicae, Marinomonas, Micavibrio admirandus Oceanospirillum, Spirillum, "Sporospirillum", Vampirovibrio chlorellavorus ,Wolinella