Jacobus rhymes with:
kobus, globus, kobus, vobis, airbus, albus, barnabas, bierbusse, bulbous, cannabis, columbus, columbus', debose, faubus, globus, harquebus, ibis, kobus, nimbus, omnibus, paribas, phebus, phoebus, pluribus, rebus, sorbus, syllabus, turbas, vobis
Jacobus sounds like:
jabs, jackovich, jacob's, jacoboski, jacobs, jacobs', jacobs's, jafco, jafco's, jakubek, jakubiak, jakubik, jakubowicz, jakubowski, japs, jeep's, jeeps, jeff's, jeffs, jeffus, jehovah's, jewfish, jewfishes, jibes, job's, jobes, jobs, jobs', jobs's, jokebook, jokebooks, joseph's, josephs, josephus, jukebox, jukeboxes