Unfortunately, the only word list I initially had to hand was /usr/share/dict/words, which is a bit rubbish. However, you might be interested in all the T9 equivalences in that list. (David MacKay has a page that in part discusses T9 equivalences.)

• ... sorted by number of equivalences.
• ... sorted by the length of the words.

A more interesting word list is the OED headwords, which gives also gives rather larger lists of results:

• ... sorted by number of equivalences.
• ... sorted by the length of the words.