The rear rim is a Westrick, usually seen on the higher quality versions of Tube Industries bicycles, and no longer available. Sun Ringle makes a nice alloy replacement, if you are really interested in doing that. The alloy wheel works great with Raleigh brakes. You could keep your eye open for a better factory Westrick rim, either complete, or just the rim, and rebuild it. My own stash of good Westrick rims is getting slim at the moment, and I am pretty much over original Raleigh 26” chrome plated steel wheels. Pay attention to how many spokes the hub has when you look for rims, rear could be either 36 or 40. The front could be 32 or 36.
Count your blessings you don’t need 28” wheels.
The bike had fenders and chain guard when it was new. It would have had the Raleigh version fenders with the welded on stays, a single stay on the front, and two on the rear. Cheaper, B tier bikes had zinc plated stays that bolted to the fenders, one stay on each fender. A replacement chain guard will be the version with a clamp on the front, as your bike lacks the welded on brackets on the tubes for the bolt on version. They turn up.
Good luck with your project.
Ted