Upper missing from shoe of uncommon type (5)
I believe the answer is:
rogue
'type' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for rogue that I've seen before include "Baddy" , "Profligate" , "Mischievous person" , "One dishonest" , "Deceitful and unreliable scoundrel" .)