Unto rhymes with:
bantu, cantu, onto, bantu, cantu, impromptu, mengistu, mongosutu, onto, vanuatu
Unto sounds like:
uinta, unaided, unamended, unanimity, unaudited, und, undated, undid, undo, undue, unedited, unheeded, unimate, unimedia, uninitiated, unit, unita, unite, united, unity, unmade, unmanned, unmet, unnamed, unneeded, unted, untidy, untie, untied, untiedt, unwanted, unwed, unwind, unwound