Viewing data not collected through logstash but rather independently shipped into elastic

Coming back to this few weeks old thread, I do have some questions standing in my way. Namely:
Querying my index in the HQ plugin, I see that all of these columns displayed there for it, are empty:

FieldFormatMap
TimeFieldName
IntervalName
Fields
Title
BuildNum

Whereas the column "Item" has the actual items.
My items are JSON objects containing a time field, a field I could call a title, and a field containing my application's build number that pushed the item into elastic.

What specific benefits am I missing by not having these fields within my items "mapped" to the aforementioned columns?

Many thanks,
Matan