By trade
What the world publishes about one occupation. A client sending money to a builder has the same problem in every country, and this view is the one that shows whether anybody anywhere has solved it for that trade.
Every trade in the index
Trade names are kept in the language the authority uses when there is no exact English equivalent. An estate agent, an agent immobilier and an Ejendomsmægler are regulated differently enough that flattening them into one label would lose the point.
Why this view exists
Nothing in this protocol is specific to a trade. A conveyancing fraud and a rewired invoice from an electrician are the same problem wearing different clothes, and the only way to show that is to lay one occupation out across every country that regulates it.
It is also the view that answers the question an implementer actually has: if I build for one trade, how many jurisdictions can I serve, and what will I find in each.
Where one trade appears in several jurisdictions, the spread of grades is usually wider than any single country would predict. That spread is the argument for a format that works at every level rather than one that assumes the best case.