I've had the 4, 5, and currently the 5X. Never had any crapware, always got updates within a week or so of releases. Insofar as I'm aware it's totally stock.
Galaxy Nexus had a bit of VZW bloat, but that was the only one I can remember having any.
Yeah, Galaxy Nexus did. And HTC One (m8) did as well.
But the HTC One is not a stock Android phone like the Nexus line and now the Pixel.
Was only true of the Galaxy Nexus purchased directly through Verizon and one of the reasons Google immediately changed how the Nexus line was handled in the subsequent releases.