.....you have cloned the whole disk, and not just the "data" partition? (On Win10 and GPT you'd normally have at least three partitions; the main one, an EFI boot partition, and a recovery partition).
Check the BIOS boot settings, and make sure they are set to UEFI, then check any boot compatibility mode (which allows boot from MBR even though the prime option is UEFI) is turned off (I've read that this can create problems with booting from some SSDs - though your last point indicates this is unlikely to be an issue).
I've just gone through a very similar process with a Lenovo laptop, with no issues.
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Unbootable SSD new
Unbootable SSD new
