Not particularly, there are only a few memory manufacturers. SK Hynix, Nanya, Samsung, Micron, etc. All those brands just buy the chips, assemble them into memory sticks.
There is a difference between SO-DIMM and DIMM for each DDR class, as well as low power variants for DDR3, DDR4, and now DDR5.
Each memory is graded and tested in kits for dual channel operation, and there are latency and sub timings to match up if you are upgrading a system. It is best to buy a new memory kit completely to avoid complications.
Best to take your system or motherboard and check the manufacturer's QVL or Memory compatibility list to get a better answer.
Their not that many places that actually make memory.
It's more like company 1-10 needs X amount of DR3 1600 with 9 cas. They start producing the memory usually with not specific parts just what is available.
They produce X amount needed by company 1 using their heatsinks and stickers and when that number is filed the production line keeps running but switching over to company 2's heatsinks and stickers, then move to company 3's order.
EDIT what to avoid is the no name Chinese memory.
Back on DDR2 memory it was pretty much buy you a 1GB or 2GB stick and put it in and it would work with what you had.
DDR3 was about the same until you got into trying to mix low and high density memory.
DDR4 got a bit worse trying to add more memory and I would think DDR5 will be worse than that.
Reminds me of a friend of mine back in the day when you could buy a 30 buck or 80 buck car battery. He said they would start production of batteries that required the size to be X by X by X with say 325 cold cranking amps. They would stop the line to change stickers so you might pay for a Sears Die Hard for 80 bucks and it was the same exact 40 buck Wal-Mart battery.
I recommend GSkill memory they have excellent support and very good returns if it fails.
They are some companies that actually have their own plants.