Paid authorship without ownership.
The group the Library was most determined to include. These are employees. They owned nothing, risked no capital and could have been dismissed, and the houses they ran are inseparable from them anyway.
It divides into two kinds, and the division is the reason the group was renamed. House stewards gave a working life to one building: Kurt Wachtveitl held the Oriental in Bangkok for more than three decades, Rudolf von Schönburg made the Marbella Club what it is remembered as, Peter Borer did the same at the Peninsula. Platform operators carried authorship across a company rather than a property — Neil Jacobs at Six Senses, Frank Marrenbach at Oetker and beyond. Calling both a general manager was accurate for the first and misleading for the second.
Including them at all is an editorial position, not a courtesy. A register that admitted only owners would describe luxury hospitality as a history of capital, when a great deal of it is a history of tenure — of one person staying long enough to make standards habitual.
What the group does not settle: a salaried authorship is the most fragile kind. It survives only as long as the owner permits, it can be ended without notice or explanation, and it usually leaves no instrument behind except the people trained under it.