If they've got the markings they're deffo genuines so it rules that possibility out
Those tie rods in your basket are spot on, the Williams uses the same ones as the early 1.8 16v which confuses the compatibility listings on parts websites
The positive camber suggests there's something bent to me as the only way that can happen with incorrect parts is if you fitted a 1.8 wishbone onto the car with Williams shocks and it's clearly obvious you haven't done that as there's no way to attach the ARB onto those
It's also clear that the shocks are right because if you'd fitted Valver fitment ones you'd have a lot of negative camber.
That camber you've got will be from the top of the hub being pushed out or the bottom of the hub being pulled in and there's a fair few different possible causes for it - bent wishbones, bent subframe, bent shocks or even bent hub(s) - so it'll be a process of elimination unfortunately
I'd start by swapping the shocks to the opposite side, if it's still the same you know they're fine. After that it's going to be a case of throwing time, money & parts at the problem until you find the cause.
The ideal way of doing this will be borrowing a Williams you know is fine and swapping parts from it 1 at a time and seeing if that solves the issue, if the issue stays the same with the replaced part you'll at least know that the 1 you've got is fine