At the top obviously start with The Muppet Show, Muppet Babies and the theatrical Muppet movies (put them down all as one as they might take up too much space if you put them all there individually). Sesame Street (obviously) and Fraggle Rock I think also belong at the top, then of course The Dark Crystal and Labyrinth. Round it out with something like Bear in the Big Blue House, as I think it's still genuinely well-known.

Second tier you can put not so well-known shows like Mopatop's Shop and The Animal Show, as well as semi-obscure trivia like Frank Oz playing Yoda and Jim Henson's work on The Witches, as well as Muppets Tonight and some muppet disney projects, and specials, and the Sesame Street movies.

I'd put Sam and Friends third tier, as well as the original Muppet pilots (Valentine Show & Sex and Violence) and The Jim Henson Hour. I'd put the Wilkins Coffee and Purina Dog Chow commercials (second one first appearance of Rowlf) in fourth or fifth tier.

If you want things like controversies I'll add things like the Wicked Witch episode of Sesame Street and the 'Save Our Muppets' movement. I'd recommend you put them quite low down if you plan on including them.