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.
sheol shool shoal sheal shiel shell shoaly shelly sheila shul chola shyly shale shaly shawl shily chela shaul cholo chiel shall shill chelae cholla shaley shallow sial
sheol howl shoal holy sheal chola chiel chela whole wheel wheal reoil ghoul heal hole helo hell heil heel cholo shell shiel shool
she shea sheugh shew shoe shoo show showy sheesh sheuch