The Great Disciples of the Buddha says that
On another occasion, many female deities called “the graceful ones”(manāpakāyikā devatā) appeared before Anuruddha and told him all the marvelous things they could do. […] When the deities noticed that Anuruddha did not find pleasure in their performance, they instantly left (AN 8:46). If we remember how the Venerable Anuruddha had spent his youth as a prince, enchanted by the arts and music, we may understand better how this scene could materialize around him. If he had not trodden the Buddha’s path to liberation, he quite possibly might have taken rebirth among these deities, who were superior in rank to the Thirty-three gods . Anuruddha must have thought this experience worth telling, for when he saw the Buddha in the evening he recounted it to him.
Does anyone know where they got the rank for these devas? Is this in a commentary somewhere?