The pots are about 10 kohm each, they are wired internally in parallel, and i got a reading of 4.7K on the connector.
I have not yet found, what company makes these, where to buy replacements, and what the part number is. It seems, Nintendo Switch uses a very similar component, but its cable is different (has a 90-degree turn).
Just in case, when i first took it apart (2021-05-28), my 2-month-old quest2 had no drift problems yet. I was just curious, what thumbstick to look for, and what is the technology. Initially upon seeing it being different to one in RiftS, i hoped it's a capacitive or magnetic or optical... Unfortunately, it's just the usual potentiometer of questionable reliability.
I have found this 3$ china part on aliexpress website. HOTHINK 1 is the name. https://de.aliexpress.com/item/1005004171286445.html?gatewayAdapt=glo2deu
I hope i could help you.