Custodians rhymes with:
cambodians, accordions, arcadians, burgundians, cambodians, canadian's, canadians, canadians', comedian's, comedians, davidian's, davidians, didion's, floridians, guardian's, guardians, indian's, indians, indians', meridian's
Custodians sounds like:
cadence, cadences, cadmus, cascading, casting, castings, castonguay, catanese, catatonic, cattanach, cautioning, cautions, ceding, chattanooga, chattanooga's, chattanuga, chatting, cheating, chestang, chetniks, chiding, chitinous, citations, citing, coasting, coating, coatings, codding, coding, coexistence, coexisting, costanza, costanzo, costing, costumes, cotton's, cottons, cuauhtemoc, customize, customizes, customs, cuteness, cutting, cuttings