Photo: Śrī Nityānanda is Anaṅga Mañjarī.
In the song Antare nitāi bāhire nitāi, Śrīla Vṛndāvana Dāsa Ṭhākura says:
rādhāra mādhuri anaṅga mañjarī nitāi nitu se seve
koṭi śaśadhara vadana sundara sakhā sakhī baladeve
2) "Nitāi as Anaṅga Mañjarī eternally serves sweet Śrīmatī Rādhikā. He is non-different from Baladeva, whose beautiful face resembles millions of moons. And Baladeva is surrounded by Sakhas and Sakhīs."
So, multiple Svarūpas. And Nityānanda Parivāra gives Mañjarī-bhāva.