The phrase "arranged under which" is correct and usable in written English.
It can be used when referring to a specific category or classification in a formal context, often in legal or academic writing.
Example: "The documents were organized into sections, arranged under which were the relevant case studies."
Alternatives: "classified under which" or "sorted under which".
The government could set up an arranged bankruptcy under which creditors have accepted conditions in advance.
The new law would not ban traditional arranged marriages, under which parents choose a partner for their children, so long as both spouses are willing.
But Justice Department officials said that those discussions led it to believe that it would be difficult to arrange conditions under which the merger could proceed.
So does the exhibition, which is arranged under general topics -- home, work, church, leisure -- but begins with a few compare-and-contrast images to set the scene.
Complex products and systems, like an aircraft, ship, or machinery plant, involve a large number of components which are arranged under spatial constraints/relationships in design space.
Bulbs were sown in pots filled with different combinations of potting substrates, which were arranged under completely randomized design (CRD), with three replications, and totally there were ten treatment combinations.
The test blueprint maps each of the 25 items in the exam to core concepts arranged under the seven themes around which the workshop was developed.
The Resistance also arranged a cover under which young Pierre could take the train to Paris, via Rennes, every weekend "for family reasons".
The minister, Edmundo Perez Yoma, had arranged a deal under which General Pinochet and four other senior generals would leave the army on January 26th, on the eve of Chile's quiet summer-holiday period.
Each ommatidium contains six to eight sensory receptors arranged under a cornea and refractile cone and is surrounded by pigment cells, which adjust the intensity of light.
