Tom Oreb, Don DaGradi, Ken Anderson, Bill Peet have design credits on Sleeping Beauty (1959), and checking around I'd plum for Bill Preet being responsible for the above concept drawings. Several pig-faced goons here, alongside some bovine and rather muppet-like creatures.
Uruks on the storyboard for Sleeping Beauty. I especially admire the goblin-hat, or should that be hat-goblin? Unfortunately he didn't make the final cut, the anthropomorphic clothing is very Boschian medieval monsterism. Also, note the pink nosed, green skinned hooded orc in the top right.
From the Sleeping Beauty experience at Walt Disney world, which opened 2 years after the movie (1961) - which appeared under blacklight (UV) giving them a peculiar "blueish sheen", green skin and pink noses familiar to the description of the Orc in the AD&D 1e Monster Manual. However, these appear to be crossed with the the ultra-rare Cyclopean Orc (Britanicus Editionus Adeeandeeus Uruk).
For those not versed in modern Orc lore, the Pig Faced Orc (green skin, lighter/pink nose) also appears as Gammorean Guard in Star Wars: Return of the Jedi, the Orcs in the 1980s Dungeons & Dragon cartoons, 1970s Lord of the Rings paintings by the Brothers Hildebrandt, and yet true origins in popular culture remain somewhat mysterious. Certainly their first written appearance as specifically Orcs is in the 1e MM, but it's entirely possible that someone at TSR (Gygax?) had been to Disneyland and had drawn upon the imagery whilst reinventing the Orc.