Help me find a replacement spoke for my rear wheel.

I ordered these wheels from Amazon, and they rode well for a while. Yesterday, though, I noticed a rattling sound while walking my bike and immediately knew something was wrong. The nipple had come loose and was rattling around inside the rim, and the spoke had fallen out during a ride.

I’m trying to identify the brand and type of spokes used on these wheels so I can order a replacement and install it myself.

For context, I’d like to avoid the return process. When I first ordered the wheels, I received the wrong item, and it took about a month to resolve the issue.…