All those dead PowerColor, Zotac, Inno3D, PNY, Palit cards over the years.
Tier 1 manufacturers:
Asus, Gigabyte, Sapphire, XFX, EVGA, MSI
Tier 2 manifacturers:
PowerColor, Zotac, Inno3D, Club3D, HIS, PNY, Palit, Sparkle, Galaxy, Gainward (was in tier 1 back in the 2000 and something),