Polymaker Panchroma PLA Filament Bundle 2kg Refill, White+Black | High Speed Spoolless 3D Printing Filament 2kg Bundle, Compatible with Bambu Labs & FDM printers, Clog-Free for Reusable Spool

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.