use Jeffreyvr\WPSettings\WPSettings;

$settings = new WPSettings(__('My Plugin Settings'));

$tab = $settings->add_tab(__( 'General', 'textdomain'));

$section = $tab->add_section('MailChimp');

$section->add_option('text', [
    'name' => 'mailchimp_api_key',
    'label' => __('API Key', 'textdomain')
]);

$settings->make();

$settings = new WPSettings(__('My Plugin Settings'));

$settings->set_capability('manage_options');
$settings->set_option_name('my_plugin_options');
$settings->set_menu_icon('dashicons-admin-generic');
$settings->set_menu_position(5);
$settings->set_menu_parent_slug('options-general.php');

$settings->add_tab(__( 'General', 'textdomain'));

$tab->add_section('Section 1');

$tab->add_section('Section 1', ['as_link' => true]);

$section->add_option('text', [
    'name' => 'option_1',
    'label' => __('Option 1', 'textdomain')
]);

$section->add_option('textarea', [
    'name' => 'option_1',
    'label' => __('Option 1', 'textdomain')
]);

$section->add_option('select', [
    'name' => 'option_1',
    'label' => __( 'Option 1', 'textdomain' ),
    'options' => [
        'value_1' => 'Label 1',
        'value_2' => 'Label 2'
    ]
]);

$section->add_option('select-multiple', [
    'name' => 'option_1',
    'label' => __('Option 1', 'textdomain'),
    'options' => [
        'value_1' => 'Label 1',
        'value_2' => 'Label 2'
    ]
] );

$section->add_option('wp-editor', [
    'name' => 'option_1',
    'label' => __('Option 1', 'textdomain')
] );

$section->add_option('code-editor', [
    'name' => 'option_1',
    'label' => __('Option 1', 'textdomain')
] );

$section->add_option('text', [
    'name' => 'mailchimp_api_key',
    'label' => __('API Key', 'textdomain'),
    'validate' => [
        [
            'feedback' => __('Your API key is too short.', 'textdomain'),
            'callback' => function($value) {
                return strlen($value) > 35;
            }
        ]
    ]
]);

$section->add_option('text', [
    'name' => 'mailchimp_api_key',
    'label' => __('API Key', 'textdomain'),
    'santitize' => function($value) {
        return sanitize_key($value);
    }
]);

add_filter('wp_settings_option_type_map', function($options){
    $options['custom'] = YourCustomOption::class;
    return $options;
});

use Jeffreyvr\WPSettings\Options\OptionAbstract;

class YourCustomOption extends OptionAbstract
{
    public $view = 'custom-option';

    public function render()
    {
        echo 'Your custom option HTML';
    }
}

$settings->add_option('custom-option', [
    'name' => 'your_option_name',
    'label' => __('Your label')
]);