For testing against public RainMaker, which Claiming method should be used?

For public RainMaker, Assisted Claiming is recommended. It is supported on all ESP32 series devices and works with both the China and Global deployments.

note

If a device is first provisioned using the China deployment, all subsequent provisioning for that device must also use the China environment. To switch, fully erase the device flash or run the clear-claim-data console command to clear the claim data, then re-provision.