Get List of all native classes

I want to get all the native classes (NSString, NSNumber, int, float, NSSet, NSDictionary) that I have loaded into my iOS Project..

i.e., if I have created a custom class named "TestClass" I don't want it listed...

I have already got a code but it returns names of all classes loaded any way I can modify the code to limit the list to Native classes only?

#import <objc/runtime.h>
#import <dlfcn.h>
#import <mach-o/ldsyms.h>


unsigned int count;
const char **classes;
Dl_info info;

dladdr(&_mh_execute_header, &info);
classes = objc_copyClassNamesForImage(info.dli_fname, &count);

for (int i = 0; i < count; i++) {
  NSLog(@"Class name: %s", classes[i]);
  Class class = NSClassFromString ([NSString stringWithCString:classes[i] encoding:NSUTF8StringEncoding]);
  // Do something with class

}

You would get all loaded classes with

int numClasses;
Class * classes = NULL;

classes = NULL;
numClasses = objc_getClassList(NULL, 0);

if (numClasses > 0 )
{
    classes = (__unsafe_unretained Class *)malloc(sizeof(Class) * numClasses);
    numClasses = objc_getClassList(classes, numClasses);
    for (int i = 0; i < numClasses; i++) {
        Class c = classes[i];
        NSLog(@"%s", class_getName(c));
    }
    free(classes);
}

(Code from objc_getClassList documentation.)

To restrict the list, you can check the bundle from which the class was loaded, e.g.

Class c = classes[i];
NSBundle *b = [NSBundle bundleForClass:c];
if (b != [NSBundle mainBundle])
    ...

for all classes that are not loaded from your application.