Drupal Views: How to add fields programmatically to a custom view in Drupal

I want to create a view in Drupal 11, but I want to add the values for that view through code. How could this be done? I’ve tried it, but the view appears empty and I can’t see the values. Here’s a simple example:

File: custom_simple_data.module

<?php
/**
 * @file
 * Custom Simple Data - expose hard-coded rows to Views.
 */

/**
 * Implement hook_views_data().
 */
function custom_simple_data_views_data() {
  $data = [];

  $data['custom_simple_data']['table']['group'] = t('Custom Simple Data');
  $data['custom_simple_data']['table']['provider'] = 'custom_simple_data';
  $data['custom_simple_data']['table']['base'] = [
    'field' => 'id',
    'title' => t('Simple data'),
    'help' => t('Rows defined in code (id, name, count).'),
    // El query_id debe coincidir con el id del plugin ViewsQuery.
    'query_id' => 'custom_simple_data_query',
  ];

  // Campo ID (numérico)
  $data['custom_simple_data']['id'] = [
    'title' => t('ID'),
    'help' => t('Identifier'),
    'field' => ['id' => 'numeric'],
    'filter' => ['id' => 'numeric'],
    'sort' => ['id' => 'standard'],
  ];

  // Campo Name (string)
  $data['custom_simple_data']['name'] = [
    'title' => t('Name'),
    'help' => t('Nombre (string)'),
    'field' => ['id' => 'standard'],
    'filter' => ['id' => 'string'],
    'sort' => ['id' => 'standard'],
  ];

  // Campo Count (int)
  $data['custom_simple_data']['count'] = [
    'title' => t('Count'),
    'help' => t('Número entero'),
    'field' => ['id' => 'numeric'],
    'filter' => ['id' => 'numeric'],
    'sort' => ['id' => 'standard'],
  ];

  return $data;
}

File: CustomSimpleDataQuery:

<?php

namespace Drupal\custom_simple_data\Plugin\views\query;

use Drupal\views\ResultRow;
use Drupal\views\ViewExecutable;
use Drupal\views\Plugin\views\query\QueryPluginBase;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * @ViewsQuery(
 *   id = "custom_simple_data_query",
 *   title = @Translation("Custom simple data query"),
 *   help = @Translation("Provides rows defined in code (id, name, count).")
 * )
 */
class CustomSimpleDataQuery extends QueryPluginBase {

  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition);
  }

  /**
   * No hay tablas SQL reales.
   */
  public function ensureTable($table, $relationship = NULL) {
    return '';
  }

  /**
   * addField no necesita hacer nada especial para los campos virtuales.
   */
  public function addField($table, $field, $alias = '', $params = []) {
    return $field;
  }

  /**
   * Ejecuta la "consulta" y pone los ResultRow en $view->result.
   */
  public function execute(ViewExecutable $view) {
    $rows = [
      ['id' => 1, 'name' => 'Alpha', 'count' => 10],
      ['id' => 2, 'name' => 'Beta', 'count' => 25],
      ['id' => 3, 'name' => 'Gamma', 'count' => 42],
    ];

    foreach ($rows as $r) {
      $view_row = [
        'id' => $r['id'],
        'name' => $r['name'],
        'count' => $r['count'],
      ];

      $view->result[] = new ResultRow($view_row);
    }

    \Drupal::logger('custom_simple_data')->notice('Final $view->result: <pre>@result</pre>', ['@result' => print_r($view->result, TRUE),
    ]);
  }
}

Drupal::logger output ($view->result):

    Final $view->result:
Array
(
    [0] => Drupal\views\ResultRow Object
        (
            [_entity] => 
            [_relationship_entities] => Array
                (
                )

            [index] => 
            [id] => 1
            [name] => Alpha
            [count] => 10
        )

    [1] => Drupal\views\ResultRow Object
        (
            [_entity] => 
            [_relationship_entities] => Array
                (
                )

            [index] => 
            [id] => 2
            [name] => Beta
            [count] => 25
        )

    [2] => Drupal\views\ResultRow Object
        (
            [_entity] => 
            [_relationship_entities] => Array
                (
                )

            [index] => 
            [id] => 3
            [name] => Gamma
            [count] => 42
        )

)

The view was created using the new 'Simple data' option, and the new fields defined in the code were added.

But the view appears empty; nothing is displayed. I’ve tried many methods I found online. How can I display those values on a view page? Thanks.