so if I understand correctly, the following are key points…
"I hereby declare a national emergency"
who this applies to:
1) person in annex
2) person (foreign) that is added later (i.e. bin alwaleed or AWAN)
3) person (non-foreign) that showed any positive support in any regard to a person listed under 1) or 2)
person means individual or [company]
so, if you take 2 + 3 together, it means that any company alwaleed had investment in and took direction from, would be an entity encompassed by 3) above, which means the entire company's assets could be frozen.
that is the first visual implication that I can gather from this.