Did a test to get the info for you and so here are the findings.
Tested against Kaguya's Kaguya Normal (First Aid, White, S ranks, no EVs)
Used Tokiko Assist (Healing Power, White, E-,C+,A+,C-,D-,C+, no EVs)
Damage Taken from Angelic Assistance with Aurora active: 64,67,69,72x3,73x3,76
Based on those numbers here is what I concluded.
1. Angelic Assistance type is changed to Light
2. Angelic Assistance Power variation is not done as a damage modifier.
3. Angelic Assistance Power is changed to 100.
4. The bonus to Light moves in Aurora is 1.5x applied and rounded with the other damage modifiers after base calculations.
Possible damage rolls assuming the conclusions are correct are.
63, 64, 64, 64, 67, 67, 67, 69, 69, 69, 72, 72, 72, 73, 73, 76