A little quick research shows that rare earth elements are not rare at all. They are abundant everywhere. While China presently is the producer of 97% of the worlds rare earth elements, it would be trivial for any other country to ramp up their production.
A different list puts China 6th, behind all the countries mentioned in your link, but with Bolivia as No.1, which I had always understood, and the US No. 5.
https://www.nsenergybusiness.com/features/six-largest-lithium-reserves-world/
Once China gets their grubby mitts on Afghani lithium ore deposits, that will change.