Coverage is going to vary from fixture to fixture, depending on fixture size and array layout. Patterns are never going to be the same between all fixtures, as they have multiple light sources. So there is really no way i can think of to accurately chart every manufacturers coverage in an easily readable format. Especially considering this is just dug up information, we would have to contact every manufacturer and get PAR data at different depths and offsets or just do it ourselves, which would be wayyyy beyond anything im willing to do.
This is really meant to be a place to come to get an idea of what a fixture is capable of that someone may be looking at buying, without having to go through all the research that i did to find this information out.