Thing is, the ESP32C3 (and other chips which have a full-speed USB port of some kind) have that 1.5K pulldown integrated into the PHY That's super important! This wasn't in the documentation, so we mistakenly added an external one to our design. Please document it clearly in the datasheet ...

I, too, am interested in this part, but am worried about being unable to source it on DigiKey.

You should not need a pullup on D+, I'm not sure why that text is there.

You do need a pull-up, but the justification to "determine the initial high-level output voltage" appears to be wrong. The ESP32-C3 (and similar) is a USB 2.0 full-speed device. That means that signal levels are simply 3.3V ...