I am currently creating a project to help the whole studio community by creating parts that are not available in Studio.
https://bricksafe.com/pages/Cyborg_Samurai/parts-not-in-studio-custom-parts
This list is constantly updated with new parts being added, as well as deleted once parts that get officially added later in Studio updates since they would no longer be needed to avoid duplicates.
I realized that Studio is missing a lot of pieces, specifically parts in LDD that aren't in Studio such as a lot of the minifigure accessories and animal parts
Some of the bricks out of many I have managed to export are this dinosaur arm and minifigure helmet
So I started downloading files from the community that made sets in LDD, looking for the exclusive parts I need in the sets as I would open them in Studio and then send the part to PartDesigner.
Where I need help is if someone may send a LDD file where the file includes 1 of every known part in Lego Digital Designer. This will be very helpful for the whole Studio Community
thanks!
I also forgot to mention that not to worry about decaled bricks since they do not export to Studio