The Microsoft .NET Core Runtime and Hosting Bundle 2/3/5/6 is already available in the catalog; however the Microsoft Windows Desktop Runtime is a seperate package. Windows desktop applications written for .NET Core will require this runtime instead.
Note the package is listed as both the Microsoft .NET Desktop Runtime and the Microsoft Windows Desktop Runtime.
Version 5.x and 6.x are available, but 5.x goes EOS May 08, 2022.
The .NET Core Runtime and Hosting Bundle package ends up installing the Windows Server Hosting bundle, even when deployed to desktops, so the existing packages aren't ideal for most desktop estates.