You're GTG with the Down to earth.
The mulch/fines should be flakey, about the size of a fingernail if that helps. The second one (Evergreen 1112345), is what I normally use, ~1 1/2 gallons/cf and 1 gallon of EWC (homegrown)/cf and ~1/4 gallon of cow manure/cf to give you a rough proportion.
The mushroom compost was just flat garbage.
About page 3 in the "Soil Test Results" thread above by Growipondfarm I posted my recipe if you want to take a look, but it's nothing really different than what you are doing, a very basic mix.
Wet