योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-22, verse-6

आत्रेयव्यासवाल्मीकिशुकवात्स्यायनादिषु ।
उपमन्युमणीमङ्कीभगीरथशुकादिषु ॥ ६ ॥

ātreyavyāsavālmīkiśukavātsyāyanādiṣu ,
upamanyumaṇīmaṅkībhagīrathaśukādiṣu 6

6. ātreyavyāsavālmīkiśukavātsyāyanādiṣu
upamanyumaṇīmaṅkībhagīrathaśukādiṣu

6. ātreyavyāsavālmīkiśukavātsyāyanādiṣu
upamanyumaṇīmaṅkībhagīrathaśukādiṣu

6. Among (sages like) Ātreya, Vyāsa, Vālmīki, Śuka, Vātsyāyana, and others; and among Upamanyu, Maṇī, Maṅkī, Bhagīratha, Śuka, and others.

Words meanings summery:

• आत्रेयव्यासवाल्मीकिशुकवात्स्यायनादिषु (ātreyavyāsavālmīkiśukavātsyāyanādiṣu) - among Ātreya, Vyāsa, Vālmīki, Śuka, Vātsyāyana, and others

• उपमन्युमणीमङ्कीभगीरथशुकादिषु (upamanyumaṇīmaṅkībhagīrathaśukādiṣu) - among Upamanyu, Maṇī, Maṅkī, Bhagīratha, Śuka, and others

Words meanings and morphology

आत्रेयव्यासवाल्मीकिशुकवात्स्यायनादिषु (ātreyavyāsavālmīkiśukavātsyāyanādiṣu) - among Ātreya, Vyāsa, Vālmīki, Śuka, Vātsyāyana, and others

(noun)

Locative, masculine, plural of ātreyavyāsavālmīkiśukavātsyāyanādi

ātreyavyāsavālmīkiśukavātsyāyanādi - A compound listing the names of sages/figures: Ātreya, Vyāsa, Vālmīki, Śuka, Vātsyāyana, and others ('ādi').

Compound type : Dvandva (ātreya+vyāsa+vālmīki+śuka+vātsyāyana+ādi)

• ātreya – a sage, descendant of Atri (e.g., Kṛṣṇa Dvaipāyana Vyāsa is sometimes called Ātreya)
  proper noun (masculine)
• vyāsa – a renowned sage, compiler of the Vedas and author of the Mahābhārata
  proper noun (masculine)
• vālmīki – a renowned sage, author of the Rāmāyaṇa
  proper noun (masculine)
• śuka – a sage, son of Vyāsa
  proper noun (masculine)
• vātsyāyana – a sage, author of the Kāmasūtra
  proper noun (masculine)
• ādi – beginning, and so on, others
  indeclinable

उपमन्युमणीमङ्कीभगीरथशुकादिषु (upamanyumaṇīmaṅkībhagīrathaśukādiṣu) - among Upamanyu, Maṇī, Maṅkī, Bhagīratha, Śuka, and others

(noun)

Locative, masculine, plural of upamanyumaṇīmaṅkībhagīrathaśukādi

upamanyumaṇīmaṅkībhagīrathaśukādi - A compound listing the names of sages/figures: Upamanyu, Maṇī, Maṅkī, Bhagīratha, Śuka, and others ('ādi').

Compound type : Dvandva (upamanyu+maṇī+maṅkī+bhagīratha+śuka+ādi)

• upamanyu – a sage, pupil of Ayodadhaumya
  proper noun (masculine)
• maṇī – a name (possibly of a sage or figure)
  proper noun (masculine)
• maṅkī – a name (possibly of a sage or figure)
  proper noun (masculine)
• bhagīratha – a legendary king of the Solar Dynasty who brought the Gaṅgā to earth
  proper noun (masculine)
• śuka – a sage, son of Vyāsa (repetition from previous list, perhaps a different Śuka or a literary device)
  proper noun (masculine)
• ādi – beginning, and so on, others
  indeclinable