Some people on e.g. reddit, slickdeals say they used to be just straight up Red-brand NAS drives and then WD changed the label and they perform similarly.
Honestly all of my Important Shit fits in my university-provided Box account and this would be for games, ripped discs, and fansubs none of which are going to be tragic to lose.
They are definitely 5400 rpm but like you (I think?) pointed out re: battletech most games are just assuming you have an SSD for their data management so I copy things to and fro when I’m actively playing them.
Link to the drive in question for those interested: https://www.bestbuy.com/site/wd-easystore-8tb-external-usb-3-0-hard-drive-black/5792401.p?skuId=5792401