A bunch of these values, like shop=implement and shop=farm_machinery, sound like candidates for shop=trade trade=*.
A hypermarket is not quite the same thing as a supermarket: a hypermarket is significantly larger than a supermarket, carrying a wide variety of items besides food, but most of the departments don’t have their own checkout counter as you’d find in a traditional department store.
In OSM, some hypermarket chains like Meijer and Fred Meyer are typically tagged as shop=supermarket, while Walmart is tagged as shop=department_store to distinguish it from its smaller Neighborhood Market format. Target can be either a supermarket or a department_store.
This nuance is especially important if we have to tag even smaller grocery stores as shop=supermarket due to shop=grocery being discouraged:
I wonder if we should actually formalize shop=hypermarket, since it’s a real phenomenon not well covered by other tags.