Polymaker Fiberon PPS-GF20 Filament 0.5kg Spool, Extreme Heat Resistance, Electrically Insulating, UL94 V0 Flame Retardant, Chemical Resistant, Ideal for Housings, Fixtures & Automotive Parts

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.