Name: Rage II [3D Rage IIC PCI]
Name: Rage 3 [3D Rage IIC PCI]
215R3 = Rage 3, the others are 215R2 its Rage 2 these are the real codenames Mach64 GT was the last of the mach 64 codenames GT is 3D Rage and 3D Rage II
ill fix them all, this is just a disclaimer what is fact.
i put it in generation order you can click on them and see the chip codes, they are in fact R2 R3 R4 etc they went up to Rage 6 before RV100
GT-B is technically GT2 i have a GT1 chip which is 3D Rage(TM) https://www.techpowerup.com/gpudb/3166/3d-rage
source is not gpuz, its figuring out chip names