I was under the assumption that Patagonia was PFC free but according to their website: "Patagonia has long relied on a DWR with perfluorinated compound (PFC) but we have been searching diligently for an alternative because of its harmful environmental impacts."

Paramo. There may a couple other smaller ones too. I haven't looked in a while.

Isn’t Paramo unique in that their garments are intended to keep you comfortable (while damp) rather than a typical DWR costed shell that is intended to keep you dry?

That's their reputation for sure, and their marketing plays up the whole "vapor transport" thing, but make no mistake, Paramo is in pursuit of the same holy grail as everyone else: a fabric that's both breathable and completely waterproof in all conditions. Like a duck.

https://sectionhiker.com/why-does-dwr-suck/ mentions

- Nikwax (all products) - Sciessent Curb

Fjällräven is relying on wax that you need to reapply seasonally.