Initialization Order of Android Components

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.dummy">

    <application
        android:label="@string/app_name"
        tools:targetApi="31"
        android:name=".MyApplication">
        <provider
            android:name=".MyContentProvider"
            android:authorities="com.example.dummy.fileprovider"
            android:enabled="true"
            android:exported="true"/>

        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

ExampleInstrumentationTest.kt

@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
    @Test
    fun test() {
        ActivityScenario.launch(MainActivity::class.java)
    }
}

Logcat.txt

attachBaseContext(MyApplication) called
onCreate(MyContentProvider) called
onCreate(MyApplication) called
attachBaseContext(MainActivity) called
onCreate(MainActivity) called
onStart(MainActivity) called

MainAcitvity.kt

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        Log.d(MyApplication.TAG, "onCreate(MainActivity) called")
        Thread.sleep(1000)
    }
    override fun onStart() {
        super.onStart()
        Log.d(MyApplication.TAG, "onStart(MainActivity) called")
        Thread.sleep(1000)
    }

    override fun attachBaseContext(newBase: Context?) {
        super.attachBaseContext(newBase)
        Log.d(MyApplication.TAG, "attachBaseContext(MainActivity) called")
        Thread.sleep(1000)
    }
}

MyApplication.kt

class MyApplication: Application() {
    override fun onCreate() {
        super.onCreate()
        Log.d(TAG, "onCreate(MyApplication) called")
        Thread.sleep(1000)
    }

    override fun attachBaseContext(base: Context?) {
        super.attachBaseContext(base)
        Log.d(TAG, "attachBaseContext(MyApplication) called")
        Thread.sleep(1000)
    }
    
    companion object {
        const val TAG = "MyApplication"
    }
}

MyContentProvider.kt

class MyContentProvider : ContentProvider() {

    override fun onCreate(): Boolean {
        Log.d(MyApplication.TAG, "onCreate(MyContentProvider) called")
        Thread.sleep(1000)
        return true
    }
}