Polymaker PolyTerra Matte PLA 3D Printer Filament – Hides Layer Lines, Easy to Print, AMS Compatible, Great for Miniatures, Prototypes, Gadgets, Matte Finish Wood Brown 1kg

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.