I’d check out Raingler.com to see if they have anything already made. If not, they can make it for you.
They built a cargo net for my attic tray that’s awesome quality.
Got my cargo nets in. The full rear is actually made for a 2 door. They don’t have any on their site for a 4 door currently. Took a chance and ordered one for the Raptor thinking I could use the added crossbar. Glad I did. Works great. Looks great. Thanks to Raingler.com.