Name as many muppets as you can have been listed in the credits of Muppet Movie theatrical releases!
These are all the named muppets who are listed in the closing credits and on imdb. Doesn't include generic things like "pig."
Muppets are listed as their own names and not characters they played. I.e. don't expect to find Robert and Jacob Marley on here. But any Muppets playing dickens characters who don't have other names listed will be included on this list.
Not counting non-theatrically released movies or Labyrinth or Dark Crystal or anything like that.
Baby muppets are not counted as separate from their adult counterparts. Good luck with the Moopets!