I want to make a collection on NeoDB (fediverse media log, like Letterboxd, Goodreads etc) of all Godzilla films. (Will be here when complete.)

But some of the lists online talk about “only official” films without further clarification.

Are there “unofficial” Godzilla films, and is there a fully comprehensive all-in-one list of all Godzilla films, regardless of official/unofficial, Toho/Sony/TriStar/Legendary etc?