You forgot the Motorola Droid. It was meant to be a "Google Experience phone.That's actually wrong.
There's two kinds of "google phones".
1) "With Google" is anyphone that has google applications loaded up, just about every single android phone that has the market on it.
2) "Google Experience" currently limited to G1, Nexus, and I think the original Mytouch. These phones have only Google apps and no other other software/modifications on it.