I don't believe Kingston (HyperX) manufactures their own RAM anymore. They buy the RAM chips from another company, package it on their PCBs, and sell it as HyperX RAM. That may be why the price is higher (Kingston is a middleman, and they need to make a profit).
The vast majority of the RAM chips today (98%) are made by Samsung, SK Hynix (Hyundai), and Micron (Crucial). Except for a few bit players you've probably never heard of, everyone else just buys from these three main suppliers and repackages.
https://www.statista.com/statistics/233419/global-market-share-of-dram-suppliers/
Of the three I prefer Crucial because they're American (no racism - I'm Korean, I just figure I should support the companies in the country I'm living in), they were one of the first memory companies to put out a memory finder website to help you easily determine which memory was compatible with your laptop/desktop, their product has been reliable at a good price in my experience, and they've replaced a 10-year old memory module under their lifetime warranty quickly and without question.