Exporting buildings and their types with Overpass

I am trying to extract all buildings in one file within a certain city (Radebeul, Sachsen, Germany) from Overpass Turbo.

My query looks as follows:

[out:json];

// fetch area “Radebeul” to search in
{{geocodeArea:Radebeul}}->.searchArea;

// gather results
(
  // query part for: “admin_level=*”
  node["admin_level"](area.searchArea);
  way["admin_level"](area.searchArea);
  relation["admin_level"](area.searchArea);
);
  // query part for: “building=*”
(
  way["building"](area.searchArea);
  relation["building"](area.searchArea);
);

// print results
out body;
>;
out skel qt;

The output:

Everything looks okay, however, I can not understand why do my previously queried administrative districts disappear in the final output? I just want to visually check if buildings are within city borders.

Moreover, I was wondering what is the most acceptable file format for QGIS import? Is it GeoJSON? While I am not sure if Overpass Turbo will provide me with buildings types as well.

---

References:

• Finding residential buildings with overpass-turbo?
• Overpass API: Select all building polygons (excluding POIs and lines) within certain area
• exporting to shapefiles

[out:json];

// fetch area “Radebeul” to search in
{{geocodeArea:Radebeul}}->.searchArea;


(                // added union here
  (
    
    nwr["admin_level"](area.searchArea);
    way["admin_level"](area.searchArea);
    relation["admin_level"](area.searchArea);
  );
    // query part for: “building=*”
  (
    way["building"](area.searchArea);
    relation["building"](area.searchArea);
  );
);                        // added union here
// print results
out body;
>;
out skel qt;