They are all listed on my website: LTM Refinishing

There are about 6 or 8 different shades of "tan" that I have seen. It is usually just what it says tan.

The coyote browns that I have seen run in about 4 or 6 different shades. They are usually a little darker and more brownish than the tan. It reminds me of a real light colored dirt.

You forgot tiger stripe brown which is just a shade or two darker than coyote brown

Earth brown has about the same number of shades as the rest. I have seen it as dark as woodland brown and even a redish brown similar to dark fall leaves.  It is usually a darker or more redish color than tan, coyote, or TS brown.

Basically they are all a different shade of brown. The same named colors can vary drastically from manufacturer to another manufacturer.

Joe