Mangosteens rhymes with:
bernstein's, feldstein's, finkelstein's, hammerstein's, philistines, springsteen's, argentines, bernstein's, carotenes, feldstein's, finkelstein's, hammerstein's, libertines, nicotine's, philistines, protein's, proteins, quarantines, seventeens, springsteen's, thirteen's
Mangosteens sounds like:
macdonough, maktoums, mcadams, mcdonagh, mcdonough, megatons, mesdames, minnesotans, misquoting, misstating, moonstones, mustang, mustangs