How to change an unit icon displayed on the minimap ?

Can we change this picture for each unit type ?
What is(are) the file(s) name ?

Not for each unit type.
Most of what you can change is in the game interface.

I think this is everything:

• 3 gold mine icons
• 2 neutral building icons
• Circle of power icon
• Hero icon
• 3 creep camp icons

Possibly normal unit icon too?

Ok thx, so there is no way to make one for each unit type.