Hey! I’m not the best person to answer this, but I found a few links that may help. The best person to answer would be a material scientist, which is an engineer who specialises in creating or choosing materials that need to particular things.
That being said, the few things that I’ve found may be of some use. From what I can tell the outermost layer of a space suit, the Thermal Micrometeoroid Garment, is responsible for radiation shielding. In terms of materials: