I don't believe so. Of course, it's also easy to combine with some of the other concepts, so variants like101) Palanquin? That been mentioned yet??
102a) a palanquin carried by clockwork bearers,
102b) a palanquin carried by untiring skeletons, or
102c) a palanquin carried by actual "higher-ranking" undead like vampires or some takes on mummies
are also easy to come up with once we have the basic idea in the first place.