Rhodobacterjohrii is the correct name if this species is regarded as a separate species within a separate genus Rhodobacter.
The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020).Publication:
Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.