I have to agree!
In Muppets Christmas Carol only Animal appeared with lines and THE REST ARE JUST SEEN.
In Muppets Treasure Island only Floyd, Zoot and Animal talked.
In Muppets from Space Animal has a big role. Dr.Teeth only has a few lines like, "Shalome!". Floyd and Zoot have a few lines too and Janice is silent.
In Its A Very Merry Muppet Christmas Movie,
and
are main characters, Animal , Floyd and Zoot are supporting characters.
In Muppets Wizard of Oz, only Dr.Teeth and Animal had lines.
Janice was in a lot of IAVMMCM, but I love their lines in Muppets Treasure Island!