Need advise on L2 Visa documents

Anyone recently completed L2 Visa interview in the US embassy in india and travelled off late can you please let me know list of documents to be provided apart from the below as my wife / kids are having interview in November

  1. DS 160 confirmation for wife kids / Embassy appointment confirmation
  2. Passport size photographs for all
  3. Marriage certicate original / Birth certificate downloaded from the corporation government website
  4. I797 / II29 / I 94 of the primary L1 holder
  5. Wriiten letter from L1 primary holder to visit the US
  6. Employment verification Letter of the US emplyer of the primary visa holder
  7. Marriage pictures and family pictures

Apart from this pls advise if I am missing anything and should i also additionally pay any feed inside the embassy