Here's a look at most of the rest of the G1 line.  I omitted items such as the power dashers and the omnibots because they did not come with art, not till later at least and that was borrowed from the diaclone line, either model kits for the dashers or box art for omni. 

 

Here are some other differences I didn't remember. 

 

Megatron holds his gun at a different angle.

Soundwave also holds his gun at a different angle (and doesn't have Cassetteman written on his chest as in the micro change versions)

Starscream is reversed.

Thundercracker is also reversed.

Topspin is reversed (and different colored)

Twintwist is different colored.

Bombshell reversed (different color)

Shrapnel reversed (different color)

Kickback (different color)

Devestator holds his gun at a different angle (different color)

 

And the obvious color variants as well as no art or totally different art. 

 

Enjoy the side by side.

Thats quite cool

:pfx  :pfx  :pfx