Others we can sort of deduce from the AH, find an item, look at it's total enhancement level and deduct the bits we know. So on live right now Incinerating is +6, because a +6 Incinerating Dagger is showing as +12. Maybe that's getting dropped to +5 with the update? We'll see on Monday I suppose.
The best solution would be to simply add all of these into the Cannith crafting recipes for the next patch so we can see and make them all