ulfben

This plugin adds an “Use as Featured Image”-action to the Media Library. Very useful if you need to set the post thumbnail / featured image for a lot of posts.
<a href="https://wordpress.org/extend/plugins/bulk-select-featured-image/screenshots/" rel="ugc">A picture says more than a thousand words</a>.
//<a href="https://www.ulfbenjaminsson.com/" rel="nofollow ugc">Ulf Benjaminsson</a> 
Copyright (C) 2012 Ulf Benjaminsson (hello at my full name dot com).
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation; either version 2 of the License, or 
(at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Bulk-Select Featured Image

Allows you to select Featured Image / post thumbnail for your posts directly from the media library view.

zeninvader

This WP plugin hides the featured image on a single post or page.
The plugin adds a checkbox to the “Featured Image” section on edit pages. Once checked, the featured image will be removed from individual posts and pages.
This plugin works on WordPress Gutenberg and also on Classic Editor.
It adds the “Hide featured image” checkbox to posts, pages, custom post types and also to WooCommerce products.
It is tested and works on latest WP version 6.1.1
If you need more info please check the plugin on <a href="https://www.zeninvader.com/hide-featured-image-wordpress/" rel="nofollow ugc">Zen Invader</a> website.
<a href="https://www.zeninvader.com/hide-featured-image-wordpress/" rel="nofollow ugc">Go to plugin’s page</a> if you have other questions or suggestions.

ZI Hide Featured Image

This WP plugin hides the featured image on a single post or page.

Bulk-Select Featured Image vs ZI Hide Featured Image