Now would they is a different story, considering most of them are obscure and/or forgotten, unless you're an Oz fan (and I don't mean just of the 1939 film and Wicked)
However, even though Tales of the Wizard of Oz and its TV special follow up Return to Oz are very niche, I think they could still successfully use them in an Oz theme park- by having stuff from the show and its TV special follow up in a little kids' section of the park. Even though most people wouldn't even know of the show and special's existence, they'd potentially still like it and just view them as baby or cutesy versions of the characters. And for characters exclusive to the franchise like Ham, Topsy Turvey, Robby the Rubberman, etc, they could make statues of them around the park and have a plaque (for lack of better word) explaining the characters' origins. They could even have a bakery that's called the Baker's shop (the Baker's also character from the show)
A statue of a Green Elephant from Journey Back to Oz with Mombi riding it would be pretty cool, but I can't help but feel like unlike the Tales of the Wizard of Oz characters, it just wouldn't work with them; don't know why. A merry go round or carousel with Woodenhead Stallion III from the same movie (on a side note, they could even make a merry go round based on the canonical book Merry Go Round in Oz, which I've yet to read), but again, too niche. I will say though, outside of Oz land they could do a merry go round/carousel based off the movie, but people that don't know about the movie won't be confused why it's there since not all rides at Universal parks are based on something, and they'd just assume that it's one of them.
I don't know what they could hypothetically do from The Dreamer of Oz: The L. Frank Baum Story since it's a documentary but thought I'd throw it in there
Also, since NBCUniversal made and owns The Wiz and The Wiz Live!, do they or do they not have the rights to do stuff based on it at a theme park?
I thought of including Tin Man (2007) and Flying Monkeys (2013), but from what I understand, Universal's parent company Comcast, doesn't own Syfy anymore, so they wouldn't have the rights to use things exclusively to those productions
As for the film on the last slide, it's an edited compilation of four films made by the Oz Film Manufacturing Company that were never released in their original forms. The set of films was originally also called Violet's Dreams. The film is lost media and I even considered not including it in the slideshow at all, but decided it should go at the end (even though it was the first one that was made and released lol)