I found media_settings.php in
/wp-content/plugins/wps-cleaner/blocks/settings_media.php
for anyone having trouble locating. Perfect solution, that WPS shouldn’t have a problem adding a front end setting to address (with a server use warning or something).
Set the limit to 400 and siteground staging site had no problems serving the images all on the same page. Much more useful this way, I delete everything, then go through the front end of the staging site noting broken images that need to be added to the exclusion list. Delete staging site and create a new one. Redo process with new list. Confirm everything is working perfectly. Push to live!
