The 1986 version was the first one I ever bought, but I got it used at a garage sale and it was incomplete so we couldn't play it. Years later I got a new copy of the 1992 version which became my standard to measure all other versions of the game by, partially because the children's book series also used this same artwork for most of the books. I started with book 5, which I believe was the first book to use the 1992 artwork while the previous books had used the 1986 artwork. So seeing that the Funko Pops are likely using the 1996 artwork as reference, I'm a little sad because the 1992 art is where my Clue nostalgia is rooted, and the 1986 artwork was my first exposure to the game.
Still, I do like the design of the characters in the 1996 version, so I wouldn't say it's that big of a deal. Plus the Clue card of Mr. Green from this version looks just like one of my uncles (although his illustration on the cover of the box doesn't, oddly enough) which is a fun coincidence.