many sites about deleted scenes and extended versions.
here some sites with fan creations,restorations and unused stuff.
good luck with these.
i´m a fan of long versions 😃

https://originaltrilogy.com/topic/Clean-up-and-restoration-of-deleted-scenes/id/13327
https://originaltrilogy.com/topic/cleaning-up-dirty-frames-for-scenes/id/14044
https://originaltrilogy.com/topic/Colorized-Classics/id/9758
https://originaltrilogy.com/topic/Extras-on-SW-laserdiscs-and-not-on-DVD-or-BD/id/15232
https://originaltrilogy.com/topic/Original-Trilogy-Extended-Edition/id/16618
https://originaltrilogy.com/topic/OT-Deleted-Scenes-Discussion/id/13307/page/1
https://originaltrilogy.com/topic/Star-Wars-Deleted-Scenes-Reincorporated/id/13512/page/1
https://originaltrilogy.com/topic/Star-Wars-deleted-scenes-reinserted/id/16428
https://originaltrilogy.com/topic/Star-Wars-OOT-with-Deleted-Scenes/id/14196
https://originaltrilogy.com/topic/Star-Wars-OT-BONUS-materials-repository/id/15985
https://originaltrilogy.com/topic/Star-Wars-Radio-Drama-update-in-1st-post-completed-review/id/7900/page/1
https://originaltrilogy.com/topic/Star-Wars-unseen/id/16680
https://originaltrilogy.com/topic/Star-Wars-Extended-Edition/id/16611
https://originaltrilogy.com/topic/The-Star-Wars-The-Lost-Workprint-Version-4-in-Production/id/15460
https://originaltrilogy.com/topic/Star-Wars-deleted-and-extended-scenes-database/id/51879
https://originaltrilogy.com/topic/Restoration-Of-The-Star-Wars-Deleted-Scenes/id/56125
https://originaltrilogy.com/topic/Rogue-One-visual-database-of-shots-not-in-the-final-cut/id/65003
https://originaltrilogy.com/topic/Star-Wars-Tosche-station-Restored/id/60368
https://originaltrilogy.com/topic/Star-Wars-Ultimate-Edition/id/66928
https://originaltrilogy.com/topic/Star-Wars-saga-Extra-Extended-Edition-1080p/id/52131