Okay, I think I see your question. You want to know which Project Puppet pattern would work for which Muppet. Well, here's an attempt at a basic list/comparison.
1. Fozzie, Cookie Monster, Oscar: Borsa pattern. These are all "live-hand" or glove puppets and this would certainly be the best pattern to try and duplicate them.
2. Gonzo, Kermit: Glorified Sock Puppet pattern. These guys (along with MANY other Muppets) are rod puppets as Gelfling Girl has indicated. Their hands are controlled by a stiff wire, or rod, while their mouth is operated by the puppeteer's hand inside their head.
3. Elmo, Grover and many other monsters: The Mostro Pattern. Although you could adapt the Roly Pattern from the Simple Series for these puppets the Mostro is a more spot on pattern. It includes some very helpful tips about working with craft fur which will be essential for creating any of the famous Muppet monsters.
Other characters like Rizzo are a little different in that his mouth is controlled not by a hand inside him, but by a spring loaded rod mechanism. I know there is a link out on the net somewhere that illustrates how to construct something like that. For now though here is another helpful link in helping you to identify the different types of Muppet body types and controls. Hope this helps!
http://entertainment.howstuffworks.com/muppet.htm/printable