(Not a Teacher)
Locksmiths make most of their living from installing, replacing, and springing locks, though they are usually equipped to cut keys as well. Most lock and key systems are mass produced, so I don't believe there is such a thing as a keysmith anymore. Also, I don't believe there are many cobblers left in the US, if any at all. Again, because of modern mass production, most folks just buy a new pair of shoes instead of having the old ones repaired.
I've never heard the term "shoesmith", nor does the term make sense to me. Shoes don't strike me as something that can be "smithed", as it does not involve any metal working.