Gadādhara Paṇḍita from the Pancha-Tattva is an expansion of Srimati Radharani and Lalitā-sakhī.

Gadādhara Paṇḍita is simultaneously an incarnation of Śrīmatī Rādhārāṇī and Lalitā-sakhī.

Srila Prabhupada - "Gadādhara Paṇḍita, the fourth branch, is described as an incarnation of the pleasure potency of Śrī Kṛṣṇa. No one, therefore, can equal him.

In the Gaura-gaṇoddeśa-dīpikā (147–53) it is stated -

"The pleasure potency of Śrī Kṛṣṇa formerly known as Vṛndāvaneśvarī is now personified in the form of Śrī Gadādhara Paṇḍita in the pastimes of Lord Caitanya Mahāprabhu."

Śrī Svarūpa Dāmodara Gosvāmī has pointed out that in the shape of Lakṣmī, the pleasure potency of Kṛṣṇa, she was formerly very dear to the Lord as Śyāmasundara-vallabhā. The same Śyāmasundara-vallabhā was present in Lord Caitanya’s pastimes as Gadādhara Paṇḍita.

Formerly, as Lalitā-sakhī, she was always devoted to Śrīmatī Rādhārāṇī. Thus Gadādhara Paṇḍita is simultaneously an incarnation of Śrīmatī Rādhārāṇī and Lalitā-sakhī.

In the Twelfth Chapter of this part of the Caitanya-caritāmṛta there is a description of the descendants or disciplic succession of Gadādhara Paṇḍita.

Gadādhara dāsa is stated to be the luster of the body of Śrīmatī Rādhārāṇī, just as Śrīla Gadādhara Paṇḍita Gosvāmī is an incarnation of Śrīmatī Rādhārāṇī Herself." (CC Adi 10.15)

Srila Prabhupada - "Gadādhara dāsa went from Navadvīpa to Katwa. Thereafter he came to Eṅḍiyādaha and resided there. He is stated to be the luster of the body of Śrīmatī Rādhārāṇī, just as Śrīla Gadādhara Paṇḍita Gosvāmī is an incarnation of Śrīmatī Rādhārāṇī Herself." (CC Adi 10.53)

Gadadhara is expansion Radharani.

Srila Prabhupada - "Regarding your two questions, the first, Sri Gadadhara is expansion Radharani." (Letter to Tamala Krsna, Los Angeles 27 May, 1970)