//  Make a feature collection of the inputs
var fc = ee.FeatureCollection([geometry, geometry2, geometry3, geometry4, geometry5]);

// set type of geometry to each feature
fc = fc.map(function(feat){
  return ee.Feature(feat).set('type', ee.Feature(feat).geometry().type());
});

// rearrange the multipolygons into polygons
var onlyPolys = fc.map(function(feat){
  feat = ee.Feature(feat);
  var geometries = feat.geometry().geometries(); // return a list of each geometry
  var extractPolys = ee.FeatureCollection(geometries.map(function(poly){
    poly = ee.Geometry.Polygon(ee.Geometry(poly).coordinates());
    return ee.Feature(poly).copyProperties(feat);
  }));
  return extractPolys;
}).flatten();

print(onlyPolys)