You should be able to filter out some tests by using the filter `site_status_tests`

Wordress documentation:
https://developer.wordpress.org/reference/hooks/site_status_tests/

Usage:

```php
add_filter('site_status_tests', function (array $test_type) {
    unset($test_type['direct']['theme_version']); // remove warning about Twenty* themes
    unset($test_type['async']['background_updates']); // remove warning about Automatic background updates
    
    return $test_type;
}, 10, 1);
```

You can get the list of tests from the `WP_Site_Health->get_tests()` method  in `class-wp-site-health.php` file.