here's a fun theme that I've compiled, "Duplicate faces".https://rateyourmusic.com/list/rickdog/repeated_faces_on_covers/
Hey Rick, thanks for stopping by: don't know if I'm worried there is someone out there as compulsive as me in compiling such, or awed by the brilliance of your collection! I'll certainly take comfort that I'm not alone! Would never have thought of your 'theme' - so, Respect! Thanks for sharing.