It is really odd how VW calls this differently across countries. Here in Slovenia, they call this 'Assistive Technology Pack' and it includes everything you mentioned. However lane assist function is just the lane assist. You can skip this option and turn on Traffic Jam, Traffic Sign, Emergency Assist on using VCDS, free of charge. I can confirm there is no special camera in Golf for emergency assist. I am assuming that having the lane assist function standard, the multifunction camera is installed in the windshield, however I've seen WLTP R's without one, so might be a good idea to confirm.
If dynamic light assist is a part of this package in UK, then I would definitely go for this, otherwise you can already have it all, if normal lane assist is standard. Apart from Blind Spot Sensors, which costs around 500 GBP to retrofit and is the only thing you can't get for free.
Not sure about UK, but ACC will not obey traffic signs recognized by camera. As far as I know, only Arteon has this function so far.