Hi briancl,
There are thousands of different pillows of all shapes and sizes and thicknesses and using all types of materials (including latex and memory foam) but a big part of a pillow choice (more than a mattress choice) involves personal preferences because our head and face area is very sensitive to the “feel” of a pillow which is much more subjective. There are no manufacturers or materials that dominate the pillow market because there is such a wide range of individual preferences involved.
There are a few basic “needs” for a pillow though that are important and the pillow thread here has some good information and links to some good resources and suggestions.
Phoenix