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.
batty batt battu butty bawty bitty bat beauty battue bitt boat baht butt bait batteau bate bott beat bawdy baddy beaut beady betta booty butte bawtie bateau bit bot but bad bet boot bawd baud bute beet bout beta bead bota body bade bite byte
fatty chatty batty tatty ratty patty natty gnatty catty att satay potty rutty matt battu paty nitty laity putty matey bitty batt gutty jetty witty kitty chitty beauty watt peaty knotty ditty latte jutty petty netty butty matte cutty tutty nutty jotty meaty datto titty dotty bawty shitty