We have to do this, and this and this, but not that. I review contracts for the D.C. government. It seems to me that you can't begin to gather a listing or a matrix of different types of federal government proposals until you take a look at the laws and regulations and figure out what the laws allows. In D.C., the difference in proposal types seems to be a difference in the ways that the agencies conduct business, some better than others.
Some agencies are sloppy about organizing proposals, others are better at it.
If the laws and the FARS allow only three basic types of proposals, for example, then it may mean that you have rogue agencies that require information that is not contemplated in the law. Now, that information in a matrix would really be useful to me.