I have to agree with all of your choices so far in Group X, other than I think there were a few in groups Y and Z that are better than these.
Butcher - This guy has always been really creepy to me. I wouldn't want that man, or whatever it is, anywhere near my meat. It looks like he escaped from a lunatic asylum where they did a lobotomy. And who cuts up their meat with the feet of the animal hanging on a wall and the other end on a table?
Gladiator - Ditto
Smithy - JSH nailed that one quite well. The guy holding the axehead must be crazy to hold that thing while the other guy pounds on it. In fact, if he trying to hammer a wedge into the handle in the head of the axe, the wedge doesn't look like it is being put in straight, almost guaranteeing that the axe is going slip in some way.
Mandarin - I have never liked that one. His face is very misshapen. His mustache is very long on one side. Why is he unrolling scrolls all over the ground? What does that have to do with Mandarin? Dictionary.com has several definitions, including:
1. (in the Chinese Empire) a member of any of the nine ranks of public officials, each distinguished by a particular kind of button worn on the cap;
6. an influential or powerful government official or bureaucrat;
7. a member of an elite or powerful group or class, as in intellectual or cultural milieus
The other 4 definitions don't apply at all, but this picture doesn't seem to fit any of the definitions.
Envoy - That has to be the most unflattering facial expression in Dominion. This guy is the last person I would want representing me as an Envoy for my country or government. And why is his letter or scroll wrapped around the handle of a baseball bat?