Montelongo rhymes with:
sotolongo, luongo, sotolongo, arango, bango, bingo, bizango, congo, dango, dingo, domingo, durango, flamingo, gringo, ilopango, ingo, lango, lingo, longo, luongo, mango, mingo, monzingo, mozingo, mungo, pengo, rengo, ringo, sotolongo, stango, swango, tango, tarango, tourangeau, venango, vingo, wingo, zarlengo
Montelongo sounds like:
medallions, meddling, middlemiss, middling, modeling, monthlong, mottling, muddling