There isn't a universally accepted set of four names for soil layers, as the number and names of soil horizons vary depending on the soil profile and location.

However, the most common and general names for the top four layers are:

1. O Horizon (Organic Layer): This is the uppermost layer, consisting of decomposed organic matter, leaves, and twigs.

2. A Horizon (Topsoil): This layer is rich in organic matter and minerals, creating a fertile environment for plant growth.

3. E Horizon (Eluviated Layer): This layer is often lighter in color due to the leaching of minerals and organic matter to lower layers.

4. B Horizon (Subsoil): This layer contains less organic matter and more minerals, often with a higher clay content.

It's important to note:

* Not all soil profiles have all four layers.

* There can be additional horizons below the B horizon, such as the C horizon (parent material) and R horizon (bedrock).

* The names and characteristics of each horizon can vary depending on the location, climate, and geological history.

If you're interested in a specific soil profile, you can find detailed information about its layers from a soil scientist or by searching online resources like the USDA's Natural Resources Conservation Service.