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.
ratoon rattoon ratton radon ratan ratany rhyton ratine ratten rattan ratteen reattain redon redan rutin radian redone retain retene retine retune rotten retinue routine written
toon ratoon rattoon ton jeton betony bouton button buttony futon newton mutton photon phaeton cottony mouton atone cyton stone duotone codon piton town puton phyton jetton cotton ketone muton muttony tone atony baton niton ratton tony beton rhyton seton stony chiton
rato rat drat prat raita rate ratty reata riata roto brat bratty frat irate crate grat grate orate prate urate