A203 carrier (v2) - which M.2 SSDs are supported?

We have a large number (50+) of the A203 V2 carrier boards, with Xavier NX boards. Most of the M.2 SSDs we have tried do NOT work - though we’ve found one that does, from Kingspec.

Is there a list of SUPPORTED M.2 SSDs somewhere? I’d love to know why some work but most don’t.