Media Library Bulk Upload
This module provides a bulk media uploader for Drupal's Media Library, using the core file upload system. It allows administrators to configure which user roles can perform bulk uploads and for which media types.
This module basically has the same idea as https://www.drupal.org/project/media_bulk_upload, however it does not use DropzoneJS for the file upload and instead relies on the Drupal's file upload mechanism and utilizes the Media Library.
After installing the module you will have to configure the permissions which user roles should be able to utilize the bulk upload and for which media types.
The module will add one local action to the Media overview page named "Upload media in bulk" similar to the https://www.drupal.org/project/media_bulk_upload module.
Once #3310813: Make Dropzone fully optional in Media Bulk Upload is finished, this module might get deprecated to focus on one solution. See #3509296: Should media_library_bulk_upload be made obsolete?