Universal Scene Description (USD)

Best Tutorial on USD: 

https://remedy-entertainment.github.io/USDBook/

Which references a small offline rendered animation scene from Animal Logic

https://animallogic.com/alab/

Best Large Scale USD file for games

https://github.com/Activision/caldera

Early implementation of USD by Disney Animation

https://www.cgchannel.com/2022/02/download-disneys-usd-version-of-moanas-motunui-island/