Polymaker PLA PRO Filament, Tough & High Rigidity Black PLA Filament 1kg Cardboard Spool - PolyLite PLA PRO 3D Printer Filament, Print with Most 3D Printers Using 3D Filament

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.