I don't think most people do vertex coordinate lists like that since the 1980s. Software does that part now. Very few 3D artists would be familiar with that aspect.

But if you open a .obj file with a text editor, you may find similarly formatted coordinate lists. OBJ format is pretty common (if not the most common), so you shouldn't have problems finding models of whatever made in it. Associated materials are referenced in the .mtl file that is normally included with the OBJ.

Outside of .obj, I think Collada and VRML are in plaintext too. (There may be others, but just going with what I'm familiar with. Other formats tend to be proprietary binary stuff or compressed in various ways.)

Of course you're the one with the programming background (which is out of my area of knowledge), so it'll be up to you to figure out how to parse it.

I know it's not much, but I hope that points you in the right direction.

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Barbequed Pixels?

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There might be something worth downloading.