Listed data was valid mostly for the IBM PC version with animated pictures from PC, Amiga and Atari ST version for comparison. There may be minor difference between monsters across a few OS ports. Conjurers, Magicians, Sorcerers, and Wizards have several variants.
Some monsters also have spell attacks or breath attacks. Mimics and doppelgangers can jump into your party and impersonate one of your party members, but only if you leave an empty slot.