Thomas Shey
Legend
licensed games come to mind.
I was thinking of The Black Company setting from Green Ronin, not a whole game, alas. Out of print, out of license, and can’t get any legit PDFs. If you know it’s publication history it had an unfortunate troubled beginning and was probably already dying through no fault of the game itself.
But I thought of other licensed games like the 007 game or the Ghostbusters game. The old Star Wars d6 game had a bit of a revival, at least in availability.
Do games based upon an IP that has gone on to live in other systems count? Like Star Wars?
This lead me to look up Stormbringer and now I need to take a look at Mournboade.
There's also the question of licensed games that have had their systems revived or retrocloned (I believe that applies respectively to your first two examples).