Here are a few angels will be reef safe.
1.Lamarck's (Genicanthus lamarack)
2.Blackspot (Genicanthus melanospilos)
3.Watanabe's (Genicanthus watanabei)
4.Venusta (Paracentropyge venusta) This one take caution although it is reef safe but it may nip at at large-polyped stony corals and clam mantles.
Hope this list helped you out.