A non-exhaustive list of assets and how they behave. It’s incomplete, but the data already here is mostly accurate.
|Asset Type||Game Permissions[^1]||Main use||Shareable||License Type[^2]||Price Floor||Creatable By||Group Creators Supported?|
|Place||Impossible||Game server template||Yes||Depends[^5]||None||Everyone||Yes|
|Model||Owners-only[^3][^4]||Object reuse||Yes||Public Domain||None||Everyone||Yes|
|Decal||Always||Image source||Yes||Public Domain||None||Everyone||Yes|
|Audio||Always||Audio source||Yes||Public Domain||None||Robux needed||Yes|
|Mesh||Always||Object shapes||Yes||Public Domain||None||Everyone||Yes|
|Plugin||Unknown||Roblox Studio extension||Yes||Undetermined||None||Everyone||Yes|
|T-Shirt||Always||Avatar accessory||Premium required||End-user||2||Everyone||Yes|
|Shirt||Always||Avatar accessory||Premium required||End-user||5||Premium members||Yes|
|Pants||Always||Avatar accessory||Premium required||End-user||5||Premium members||Yes|
|Hat||Always||Avatar accessory||Must be selected||End-user||Unknown||Roblox & select people||No|
|Hair||Always||Avatar accessory||Must be selected||End-user||Unknown||Roblox & select people||No|
|Accessory||Always||Avatar accessory||Must be selected||End-user||Unknown||Roblox & select people||No|
|Gear||Always||Avatar accessory||Roblox only||End-user||N/A||Roblox only||No|
[^1]: This means whether an asset can be successfully loaded inside a game server and for what reason. It does not necessarily mean the game’s creator has permission to use it.
[^2]: This is just my conjecture. It’s not legal advice. Also, this only applies if the asset is made copyable or put on the market.
[^3]: As an exception, anything created by Roblox’s account can be loaded regardless of ownership.
[^4]: Because groups don’t have inventories and can’t own assets created by others, it’s impossible to allow these third-party assets to load into its group games. They must be copied.
[^5]: If a place is made copyable, it can be used to make another game. However, if game access is being sold for a fee, then it’s end-user. It cannot be downloaded even if the place exists in the buyer’s inventory.
[^6]: This is a Roblox Studio beta feature, and it doesn’t seem to use the standard asset ownership system.