Following parts were submitted to Studio team and are pending to be reviewed by the team for being included in a future release of Studio.
In the meantime, you can install these parts in your own Custom Folder and already use them in your models built with Studio. You can download necessary files on Studio Parts GitHub repository.
Except if specifically stated all these parts include conncectivity info so you can use it very easily in Studio.
That website present previews of each part available in the "Submitted to Studio team" folder available on Studio Parts GitHub repository.