Found this thread Voodoo 2 component map and now I'm going to try and measure the values.

Located the right pins and about to setup a measurement harness but before I do I think I have a reliable test for what colors are having an issue.

running Win98 with a Riva TNT

Don't forget to remove pass-through cable.

Also some useful info: Successfully fixed a 3DFx Voodoo2 with miscolored output

That thread was exactly what I needed! Thank you 😀 I tested the RGB pins on the RAMDAC and got values near the range that the fix thread OP said were out of range. In my case, my card uses a Texas Instruments TVP3409-135CNF RAMDAC which is proving hard to source. I haven't found if these chips are interchangeable so I'm waiting for an Alibaba seller to get back to me, the other main sites DigiKey and Mouser both want minimum orders of at least 100 (and at $2.80 a chip).

The RAMDACs are interchangeable.

Did you actually try to also run some native Win 95/Win 98 Glide or Direct 3D games?
That magenta hue in Tomb Raider is normal with Voodoo 2 when not setting the compatibility environment variables.

Try other Glide games like NFS 2 SE, Unreal, etc. and report back.

And as for Tomb Raider 1, if you really want to play it on a Voodoo 2 with the original TOMB3DFX.EXE file (the one for Voodoo 1, not Voodoo Rush), then you need to first run the attached batch file.
If you get an error that complains about no more space left for environment variables, add the following line to the MS-DOS config.sys and then reboot:

1Shell=C:\WINDOWS\COMMAND.COM /E:512 /P