Here's the list of Walt-Era TV Episodes after a brief search, can't say it's complete...some restored/remastered HD options, also.
"I Captured the King of the Leprechauns" (SD Only): $2.99 rent, $9.99 own
"Disneyland Around the Seasons" (SD/HD): $2.99/$3.99 rent, $9.99/$14.99 own
"The Plausible Impossible" (SD/HD): $2.99/$3.99 rent, $9.99/$14.99 own
"Operation Undersea" (the making of 20,000 Leagues Under the Sea)...(SD/HD): $2.99/$3.99 rent, $9.99/$14.99 own
"Tricks of Our Trade" (SD Only): $2.99 rent, $9.99 own
"The Story of the Animated Drawing" (SD Only): $2.99 rent, $9.99 own
"Perilous Assignment" (the making of Third Man on the Mountain)...(SD Only): $2.99 rent, $9.99 own
"The Liberty Story" (excerpts from Johnny Tremain with Ben and Me included)...(SD Only): $2.99 rent, $9.99 own
"Walt Disney's Wonderful World of Color: An Adventure in Color/Donald in Mathmagic Land" (SD/HD): $2.99/$3.99 rent, $9.99/$14.99 own
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History Documentaries
Frank and Ollie (SD/HD): $2.99/$3.99 rent, $9.99/$17.99 own
Walt and El Grupo (SD/HD): $2.99/$3.99 rent, $9.99/$17.99 own
The Boys (SD/HD): $2.99/$3.99 rent, $9.99/$17.99 own
Waking Sleeping Beauty (SD/HD): $2.99/$3.99 rent, $9.99/$17.99 own
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Also, lots of obscure live-action titles, like Sammy the Way-Out Seal, Ten Who Dared, Nikki Wild Dog of the North, Greyfriar's Bobby, The Best of Walt Disney's True-Life Adventures, etc. HD remaster/restorations of Darby O'Gill, Third Man on the Mountain, In Search of the Castaways, Those Calloways, etc. Oddly enough, one of my favorites is not to be found...The Three Lives of Thomasina. Too thorny with the spiritual/religious parallels? Or the slow-motion footage of a tabby cat dropped repeatedly from a ladder on a soundstage against a black backdrop? Both? Also missing -- Make Mine Music and Melody Time, the Tomorrowland Space Trilogy (Man in Space, Man and the Moon, Mars and Beyond), Victory Through Air Power and the WWII shorts, The Light in the Forest, the CinemaScope versions of Westward Ho!: The Wagons and The Great Locomotive Chase...I'm sure there's more.