The folks that run the 'Jazz Guitar Online' site http://www.jazzguitar.be/
have some free resources available that you might find useful. A recent addition is the 'CHORD IDENTITIES AND SIMILARITIES' booklet from Frank Novotny and Robert Denman. It's a small pdf document that lists chords with similar names.
Here's the link to it: http://www.jazzguitar.be/files/jazz-chord-identities.pdf