The first modern Windows Mobile phone launched in November 2015. The market of Google phones at that point in time was the Nexus 4, Nexus 5, Nexus 5X, and Nexus 6.
Now I'm not a huge fan of the Nexus 6 (though I certainly wouldn't call it "bad"), but the Nexus 4 and Nexus 5 are still to this date the best value smartphones ever released.
Everything else outside of the Chinese market has Google Play Services with root access to the system and as controlled by Google's MADA agreement with manufacturers which has already been found illegal in multiple jurisdictions across the globe.
Convention dictates that "Google phones" specifically means e.g., Nexus/Pixel devices.
Fortunately, if you're unwilling to distinguish between hardware and software, there's already a very convenient and unambiguous term for mobile devices that run Google's OS. In fact, you just used it in the same sentence!
This is Android based on my eight years with them.
I won't argue with you on iPhone, it's a great "I just want it to work" option. And since there's no other alternative, it's what I carry today.
But Windows Mobile was a breath of competency in a market of basically all bad Google phones.