How to add API results in my dynamic data list?

Hi,

i am connected to an API and i can only see the full list of the API results after clicking “initiallize” - is there any other way to see this list?

Second question is: How can i get any field from my API (the list) in the list which is shown for dynamic data? There is one part of the API approx. 4 of 70 fierlds in there - no clue why… How can i add more here?