Polymaker Fiberon PA612-ESD 3D Printer Filament 3kg, ESD-Safe Carbon Fiber Nylon, Heat Resistant to 150°C, Chemical Resistant, Industrial Grade Strength, PCB Fixtures, Electronics Housings

The most engineering-minded consumer brand in this space. Polylite is their everyday PLA, PolyMax adds impact resistance, and PolyWood nails the timber look. They publish data sheets and actually explain what's in their formulations.