Sample Components with Dependencies:

Sample Apex Controller:

public class ExampleController {
    
    public static String test() {
        
        System.debug( 'Testing' );
        return 'Testing';
        
    }
    
}

Sample Apex Test Class:

@isTest
public class ExampleControllerTest {
    
    public String str = ExampleController.test();

}

Sample Visualforce Page:

<apex:page controller="ExampleController">
</apex:page>

Sample Tooling API Query:

SELECT MetadataComponentId, MetadataComponentType, MetadataComponentName 
FROM MetadataComponentDependency 
WHERE RefMetadataComponentId = '01p3t00000FeKQYAA3'