Nice. I bet it's a privet of some sort. Someone else will know. I bet it takes a lot of water. I've planted 5 hop bushes recently to replace the barren spots that are showing up in my lady banks hedge.

It's a bit too distant to make a good guess. It does look like the foliage is pretty fine so it could be myrtle. If you have a chance to take a close-up, folks here could probably make a solid ID.

That is a very mature hedge. I'm thinking privet. We had 3 hedges like this where i grew up in Phoenix.
A lot of work to keep trimmed and need good deep watering.

Looks like Myrtle to me. If you get close enough to touch the foliage, it's fragrant - sort of medicinal. Blooms with very small white flowers. It's common in older parts of Phoenix and surrounding cities.

Here's a link to the ASU campus arboretum web site where they have photos of myrtle as a hedge or as a small tree.

Here is a link that might be useful: Myrtle