Nārada Muni is Madhumaṅgala ... and Nāradī Gopī ... MULTIPLE Svarūpas !!!
According to Nārada, Skanda and Padma Purāṇas, Nārada Muni also has a Gopī form, which he obtained after meditating for a long time.
According to Gopāla-campū, Nārada Muni is also Madhumaṅgala Sakha.
Multiple Svarūpas. Multiple Rasas. In one same Līlā !!!
In addition, Nārada Muni participates in other Līlās. In Vaikuṇṭha as Nārada himself.
Nārada Muni is not Viṣṇu-tattva. He's Sādhana-siddha. And even if we consider that he is Nitya-siddha ... Siddha ... is ... Siddha !!!
The power of a liberated soul (Siddha) is immeasurable and indescribable. This is stated in the Vedānta-sūtra.
In the last Chapter and last Pāda of the Vedānta-sūtra with commentary of the Vedānta Ācārya Śrīla Baladeva Vidyābhūṣana (Śrī Govinda-bhāṣya), it's explained that a liberated soul (Siddha) has his desires satisfied automatically, at once. Whatever they are.
It also explains that a liberated soul (Siddha) can have as many material and spiritual bodies as he wishes. Simultaneously. That liberated soul can exist in many transcendental bodies. And if he wishes, may not have any.
The Vedānta-sūtra also explains that the power of a liberated soul (Siddha) is so great that he only can not create a Universe. Otherwise can do whatever he wants. The liberated soul participates in all the opulences of the Lord, except the power of creating and sustaining the world. Only.
There are many examples. Murāri Gupta despite being Hanumān, also has a form in Mādhurya-rasa.
If we read the books of Murāri Gupta we will see that: Can it be by a monkey in Dāsya-rasa?
All pārṣadas (associates) of Śrī Caitanya Mahāprabhu ALSO have a Svarūpa in Mādhurya-rasa.
All the Parivāras descending from Śrī Caitanya Mahāprabhu can reveal the identity of these Svarūpas and their testimony is flawless.
All the associates of Kṛṣṇa have different Svarūpas with which they follow Bhagavān in several different Līlās.
In Lalita-mādhava, Śrīla Rūpa Gosvāmī explains that Śrīmatī Rādhārāṇī entered into the Yamunā and drowned. Kālindī, Yamunā Devī, took Rādhā and handed her over to her father Sūrya, the sun god. The sun god handed over Rādhā to his dear devotee Satrājita. Satrājita's daughter is Satyabhāmā. Rādhā entered into Satyabhāmā. Rādhā is in Dvārakā as Satyabhāmā.
Also, Candrāvalī became Rukmiṇī, the daughter of Bhīṣmaka, and all the Aṣṭa-sakhīs became Mahiṣīs (queens), and other Gopīs became their girlfriends; and all of Kṛṣṇa's Sakhas became His sons and nephews in Dvārakā as members of the Yadu-vaṁśa.
In the same way, all associates of Śrī Caitanya Mahāprabhu follow Him in His Līlā of Mādhurya-rasa.
"Those who engage in the service of Lord Nityānanda Prabhu and Lord Advaita Prabhu generally have relationships of parental love, fraternity, servitude and neutrality. When such devotees develop great attachment for Śrī Caitanya Mahāprabhu, they too become situated within the intimate circle of devotees in conjugal love.” (Śrī Bhaktisiddhānta Sarasvatī Ṭhākura - Anubhāṣya CC Ādi-līlā 7.17)
"Both internal devotees and confidential devotees are attracted by the conjugal love of the Supreme Absolute Truth. These are the most confidential devotees of Lord Caitanya. Other pure devotees, who are more or less attached to Śrī Nityānanda Prabhu and Advaita Prabhu, are attracted by other transcendental relationships, such as parental affection, friendship and servitorship. When such devotees are attached to the activities of Lord Caitanya, they at once become confidential devotees in conjugal love with the Supreme Lord." (Śrīla Prabhupāda, Teachings of Lord Caitanya ch. 17)
And therefore, multiple Svarūpas, multiple Rasas, in the same Līlā or different Līlās, even for Sādhana-siddhas, is demonstrated by all the Pramāṇas of the Gauḍīyā Vaiṣṇava Epistemology:
(1) direct understanding (Pratyakṣa)
(2) hypothetical understanding (Anumāna)
(3) historical understanding, tradition (Aitihya)
(4) Vedic testimony (Śabda)