Palombo rhymes with:
mambo, pombo, archambault, archambeault, bimbo, colombo, columbo, cumbo, dumbo, gumbo, gumbo-limbo, jumbo, lembo, limbo, mambo, mumbo, palumbo, pombo, rambo, rambow, sambo, shambo, stumbo, tambo, trumbo, zambo
Palombo sounds like:
palomba, palombi, palumbo, plainview, plumb, plump