The terms and titles for household staff were well defined. Every position had a specific description, status and perspective. These days, many domestic positions are not so well defined. A chauffeur might do some gardening now and then, a cook might lend a hand cleaning the kitchen or serving meals. A Butler could double as a personal assistant, or drive his employer to work.
Flexibility is the keyword for modern domestic staff.
Some domestic positions nowadays are impossible to define. But today also, there is a surprising number of large private households that employ the full array of domestic staff. A really large property might employ an estate manager for the outside care and maintenance. If there is a yacht, it will need a captain and crew, and any additional or foreign properties will have to be looked after also. The employment of hired workers by private households for the performance of tasks such as housecleaning, cooking, child care, gardening, and personal service.