Avatar or Expansion of Krishna: Different Levels of Expansion

                                                                  Q. Can you tell me where I can find the complete chart of expansions starting from Lord Krishna -> Sankarsana and so on.

                                                                  Q.  While preaching/discussing with a devotee, the following question came up. Does Lord Ganesha belong to the category Jiva Tattva? Also does Goddess Saraswati belong to the category of Shakti tattva? Are they eternal? One consequent question is - we know Lord Brahma belongs to the category of Jiva Tattva and if Goddess Saraswati is eternal, how is it that she will serve a different person as husband for every creation?  Understanding this will help in preaching to Indians, so I am asking this. Please forgive me if I could not address these exalted personalities properly.

                                                                  Q: Generally people know about Vishnu or Kshirodakasayi Vishnu. The general public has not heard about other Vishnu forms- Karanodayakasayi Visnu, Garbhodaka sayi Vishnu etc. and other expansions of Krishna: Immediate expansion as Balarama and subsequent expansions. Where in this information in sastras is available?
                                                                    We would like to know more about these details of different forms of Krishna's expansions and about Universal egg.
                                                                    
                                                                   

                                                                  Q: In the Introduction of the Krsna book (paragraphs 3 and 4), the following is stated. (Ellipsis are mine):
                                                                   "... when the Lord descends, the incarnation emanates from Viṣṇu. ... when Kṛṣṇa appears, all the Viṣṇu expansions join with Him. ... Kṛṣṇa actually appears in order to demonstrate His Vṛndavana pastimes and in this way attract the fortunate conditioned souls and invite them back home, back to Godhead. The killing of the demons in Vṛndavana was carried out only by the Viṣṇu portion of Kṛsna."