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.
mammies mamies mammees mummies mammeys mommies mameys mammas mamboes momes mumms memes mamas maims mimes mambos mimeos mambas mems moms mums memos momus mumus mimosa mommas muumuus
gimmies jemmies immies cammies tammies tummies shimmies jimmies pommies shammies commies chammies jammies whammies mommies mammies yummies tommies dummies rummies mummies zombies mamies lambies shammes ramies femmes amies demies mammeys gimmes momes memes homies roomies mimes mammees mis
mammie mamie mamma mammae mammee mammey mammy umami