In Drupal we use the Plugin API to create plugin type functionality. If you want to call specific plugin of type then you can simple use the below snippet
$plugin_manager = \Drupal::service('plugin.manager.my_plugin_type');
$plugin = $plugin_manager->createInstance('my_plugin_type_id');
You call the plugin manager service for your plugin type and then you can pass the your plugin type id to call the specific plugin.