aa-globe

This plugin has no settings. 
Just activate the plugin and check if sold out items have moved to the bottom of the list.

Catalog Sorting by Stock Status – In Stock First, Sold Out Last

This plugin changes the sorting of a catalog (or product category) so that out-of-stock items are always at the end of the list

Clarion Technologies

Yogesh Dalavi

Author filters plugin has been developed with an idea to add an option to sort page, post, custom post type listing with respect to authors.
Currently in WordPress core installation we have an option to sort post, page, custom post type grids with respect to category etc. However, currently an option to sort or filter the records with respect to author adds one more option to administrators to sort the listing.

Author Filters

Using this in WordPress 4.8, works perfectly for Pages, Posts and Custom Post Types.  Simply activate the Plugin, that's it.

Does the Job!

Author filters plugin integrates an author filter drop down to sort listing on post, page, custom post type in admin.

Catalog Sorting by Stock Status – In Stock First, Sold Out Last vs Author Filters