What branch does 550.54.14 belong to?

I’m asking this as a driver package maintainer on the NixOS package repository.

The release announcement marks it as a production branch release and looking on the driver downloads page shows it as a non-NFB driver.

However current release branches shows it as a new-feature branch driver.

Meanwhile Unix Drivers | NVIDIA can’t seem to decide whether the production branch is 550.54.14 or 535.154.05, depending on the device that the page is opened on and doesn’t show any change to the new-feature branch.

Some clarification would be appreciated.