Rosenbergs rhymes with:
rosenberg's, rosenberg's, rosenberg's, hoffenberg's, katzenberg's, rittenberg's, rosenberg's, wallenberg's, freedenberg's, greenberg's, hoffenberg's, katzenberg's, rittenberg's, rosenberg's, steinberg's, thornburg's, thornburgh's, thornburghs, thornburgs, wallenberg's
Rosenbergs sounds like:
rauschenberg, reichenberg, riesenberg, rosenberg, rosenberg's, rosenburg