Hi JackBauer,
As I know you’re already aware, I don’t have too much expertise with blankets and they’re not the focus of the forum (perhaps there are other more knowledgeable members here who can provide some assistance), but…
While it is related mostly to sheets, post #7 here and some of the links it contains may help to point you in a good direction. Post #26 here has links to quite a few companies who carry sheets and blankets, and perhaps some of these companies carry blankets that similar to what you desire.
Is this acrylic blanket from the Vermont Country store like what you are looking for? If so, here are some ideas. These remind me of the blankets I had as a child and they may be more like what you are trying to find.
Phoenix