Old and New exploded diagrams.
https://www.paul-lange.de/index.php/...ichnungen.html

Old exploded diagrams, everything is mixed together.
http://bernd.sluka.de/Fahrrad/Shimano/TM/?C=S;O=A

Play around on the Shimano tech site and you'll get huge lists of derailleurs.
http://si.shimano.com/#/
Examples:
http://si.shimano.com/#/en/search/Co...lleur&type=MTB
http://si.shimano.com/#/en/search/Co...leur&type=ROAD