First of all: Common Angels
As stated on their profiles: Angels can regenerate from being reduced to nothing by Angel Halo.
While reduced to nothing by Angel Halo, Angels return to their "Holy State", aka: to the concept of light.
The concept of light (as already threated on the profile) is half of chaos, a conceptual nothingless devoid of space, time and concepts, Holy is already threated as NEP type 2. At least for me, it seems more like High-Godly than Mid-Godly (regenerate from NEP type 2)
Second of all: Goddess Ilias
She is the will of the concept of light. So, she should have immortality type 8 without "possibly"
Third of all: Characters intelligence
Goddess Ilias: Knows about the existence of every Human, she can also do a evaluation of any existent monster of the game, also those that were created a little time ago. It seems more Nigh-Omniscience than Supergenius, at least, the "likely" should disappear
"Considered one of the most skilled swordsmen of all times. Compared to Granberia, who managed to outdo the hundreds of years old Saladamaner in term of skills in merely 25 years)", "Trained and nearly all of form of combat form while reaching the highest form of mastery", it seems pretty solid to be just "Likely".