Catholics rhymes with:
non-catholics, non-catholics, non-catholics, acrylics, alcoholics, alix, calix, calyx, cowlicks, ehrlich's, felix, fralix, gunlicks, helix, hydraulics, interpublic's, italics, metallic's, non-catholics, public's, publics, publix, relics, republic's, republics, symbolics, wallich's, workaholics
Catholics sounds like:
cadillac, cadillac's, cadillacs, castellucci, castelluccio, castilleja, castle's, castles, catalog, catalogs, catalogue, catalogues, catalyze, catholic, catlike, catolica, cattolica, catwalk, citadel's, coastal's, coattails, cocktails, codelco, costales, costello's, cutlass, cytology