While Walt did not personally "make" Carousel of Progress, or any other attraction, his involvement with certain attractions was stronger than with others. For example, he did have a lot of input into the original Carousel of Progress, and drew up the original sketch for Tom Sawyer Island. Truth be told, he had nothing to do with most of the attractions at Disney World, as he had died before the Magic Kingdom was built. However, since COP was a transplant from California, his personal stamp is on that one...though it has been changed a few times since then.
If, however, you want to be more general about it, these are the attractions still at the Magic Kingdom that were "clones" of their Anaheim mother: Swiss Family Treehouse, The Jungle Cruise, The Tiki Room (in spirit only, as WDW's has been ruined), Pirates of the Caribbean (though he never saw Disneyland's open he had significant input), Tom Sawyer Island, Country Bear Jamboree (this could technically be considered a Walt Disney attraction, as it was one he was working on with Marc Davis for a ski resort right before his death), the original Diamond/Golden Horseshoe, The Hall of Presidents (though Disneyland only had the Lincoln portion a show similar to what is seen today was discussed), It's a Small World, Peter Pan's Flight, Dumbo, The Carousel, Snow White's Scary Adventures, the Railroad, the Monorail, COP, and generally speaking the Peoplemover (WDW uses a different operating system). Very few of these are exactly like the original in Disneyland...but then again, most of the attractions in Disneyland have been modified in some way, too. It all depends on how technical you want to get.
