If your laptop is unable to boot from the USB drive, try using a different USB port. Some laptops have only one USB port that can be used for booting. Just an idea.
[edit]
I made that comment above after a long day of work…
With that being said obviously there isn’t an issue with the usb drive because you can boot to the installer usb and install to the actual drive…
In some case I have read that Clear Linux can have issues with certain NVMe drives such as your (KINGSTON RBUSNS8154P3256GJ1).
In the installation process are you seeing any errors ? With would come up rather than a check mark, but a red or orange X mark beside the corresponding task (such as copying cached files).
So you can try this…
in BIOS: fast boot and quick boot disabled
build-in shell on, on starting usb flash: press “e”, add params nvme_core.default_ps_max_latency_us=0 nvme_load=YES on installation: choose LTS core instead of native.
I think someone else had a similar issue and that was the fix.
Here is the link to the other thread: