I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
shamoy shammy sham shmo shame shawm chammy shimmy cham shim chemo chummy
shamoy ammo shammy whamo whammo tammy sambo mammy beamy foamy hammy jammy cameo ambo gamay gamey gammy gamy lamby loamy mambo mamey rammy seamy tomboy whammy chammy camo
sha shah shaugh shaw shay shea pshaw