The ABC article really is much better than the CNN one. It has actual quotes from the sealed order and goes into more details about the actual process, beyond what you're highlighting. The only thing that seems to really be missing from both is what the actual evidence is, as opposed to a description, which is bizarre if you're going to go so far as to make direct quotes of the order.

My guess on the evidence based on what's been in the news is a narrative that Trump was always aware that he had classified information since I believe the SC heard testimony that Trump oversaw the packing process of his documents. That or someone who did pack the documents said they knew they packed classified documents and told Trump as such.