https://www.drupal.org/project/drupal/issues/3027607

slcs.info.yml

name: 'Scale Language Content Settings'
type: module
description: 'Scale Language Content Settings form'
core: 8.x

slcs.module

<?php

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Link;
use Drupal\Core\Render\Element;
use Drupal\Core\Url;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function slcs_form_language_content_settings_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  // This is a separate module because content_translation weighs itself to 10.
  // The form can be simplified to just a single bundle because every validation
  // and submit handler will iterate the settings from the form instead of the
  // various central registries.
  $query = \Drupal::request()->query->all();
  $entityTypeId = $query['entity_type'] ?? '';
  if (isset($form['settings'][$entityTypeId])) {
    $form['back'] = [
      '#type' => 'link',
      '#title' => t('Back'),
      '#url' => Url::fromRoute('<current>'),
      '#weight' => -1,
    ];
    $bundle = $query['bundle'] ?? '';
    if (isset($form['settings'][$entityTypeId][$bundle])) {
      _slcs_keep($form['entity_types']['#options'], $entityTypeId);
      _slcs_keep($form['settings'], $entityTypeId);
      _slcs_keep($form['settings'][$entityTypeId], $bundle);
      $form['settings'][$entityTypeId]['#title'] .= sprintf(' (%s)', $bundle);
      return;
    }
    else {
      $element = $form['settings'][$entityTypeId];
      foreach (Element::children($element) as $bundle) {
        $label = $element[$bundle]['settings']['#label'];
        $queries[sprintf('%s (%s)', $label, $bundle)] = [
          'entity_type' => $entityTypeId,
          'bundle' => $bundle,
        ];
      }
    }
  }
  else {
    foreach ($form['entity_types']['#options'] as $entityTypeId => $label) {
      $queries[(string) $label] = [
        'entity_type' => $entityTypeId,
      ];
    }
  }
  _slcs_keep($form, 'back');
  // Suppress the paragraph error message.
  $form['settings']['#access'] = FALSE;
  ksort($queries);
  foreach ($queries as $label => $query) {
    $items[] = Link::fromTextAndUrl($label, Url::fromRoute('<current>', [], ['query' =>  $query]));
  }
  $form['list'] = [
    '#theme' => 'item_list',
    '#items' => $items,
  ];
}

function _slcs_keep(&$elements, $key) {
  $keep = Element::properties($elements);
  $keep[] = $key;
  $elements = array_intersect_key($elements, array_flip($keep));
}