The residential elevators here in Japan always show the floor the elevator is currently on. They also have a monitor showing who (or what) is inside the elevator car, so you're not surprised when the door opens. (The monitor isn't always on each floor though, but always on the ground floor.) They also have a "pet" button so dog owners can warn people they have an animal in the elevator.

I've seen it fairly frequently in residential buildings in Toronto. Usually the main floor has a current floor indicator but often the other floors don't. Minor cost savings probably?

In my experiences, there's often an indicator above the elevator. Not always though, and I don't use elevators much.

This might be a regional thing but the only times I’ve ever seen a lift without an indicator has been in glass lifts.

A lot of buildings down have floors under floor #1 so its always above you