Posting here as well for visibility - I made a mistake on the Chaos Orb drop rate article sorry!
I basically ommitted just the Orb of Ingots from the list and it only added up to 90% chances for the Chaos Orb, after I added the Orb of Ingots to the Chaos Orb list, all 100% is accounted for.
I’ve double checked both lists and they are all good now.