This has been an item that companies have seemed to have given up on;
to do a correct trunk mat.
All there are are vinyl ones that are not correct.
The originals were the typical houndstooth , herringbone rubber mats, etc; that had the correct textured backside. Non of the reproductions
are made that have the correct backside.
Have any of the companies started coming out with correct looking mats?

If you're talking about 70 and up cars, what I'm gonna do is buy some Burtex from ACC and cut my one for my 71. It is as close as we can get, but they won't spamt one out for us.

I'm pretty sure Detroit Muscle Technologies said last year they were working on them.
Iirc they said they'd never get the exact material, but if they do end up introducing a trunk mat I bet it will be the closest thing available on the market!