Species names deposited for genomes do not always correspond to genomic lineages, complicating taxonomy and functional comparisons. We analyzed 432 genome records, including 400 assigned to , using ANI, AAI, type-strain dDDH comparisons, and phylogenies based on 120 bacterial markers and 42 ribosomal proteins. ANI clustering at 95% identified 29 groups, including five highlighted candidate species-level lineages. Both phylogenies supported a genus-level clade, although one ANI group showed discordance between the ribosomal-protein ML topology and bootstrap consensus. Type-strain dDDH supported conspecificity of and (86.0%), whereas and were below the conventional species boundary (66.7%). Pan-genome analysis of 31 representatives revealed extensive gene-content variation. Across 400 records, 148 of 342 KEGG modules reached the reconstruction threshold in at least one genome, and 58 did so in all genomes. In the full 432-record dataset, 174 genomes had Ti-associated and seven had Ri-associated marker profiles; and were detected in 243 and 29 genomes, respectively. These results identify taxonomic assignments requiring reassessment and link genomic grouping to variation in predicted functional repertoires.