Vaalingrade
Legend
Really depends on how much you regard the accidental prototypes to be genuine precursors to the final product.My point had nothing to do whether it's overused, just to dispute the statement that it didn't exist before 2008. The Seelie Court as described on page 9 of the 2e Planescape product Planes of Chaos, is the definite precursor to the Feywild, already unmoored from a secure location in the Great Wheel in its wanderings, but not a full plane quite yet. It's very similar to how its sister plane slowly changed from the Demiplane of Shadow to the Shadowfell over the course of multiple editions.
The First World was an afterthought in the 3e MotP and in theory could be a pre-Feywild, but does that mean any ripoff 'Land of the Fey' was a direct precursor tot he Fey Wild?
And the plane of shadow was a sad emptyness filled with undead that existed there naturally despite being clearly described as being generated by a type of demise. It's... not really anything like the Shadowfell, which is more like Eberron's plane of shadow if it ate Ravenloft and also every Underworld.