So, to put some order in the process so far.

1- yotsuya: Uses 4K83 until movie switches from Luke’s face to the distance shot of him standing in front of the pyre that then pans up. From there uses his own 97 SE until it pans back down to Endor again. Then he puts in the BR until Luke sees the Force Ghosts appear. Then back to 4K83, but cut to match the 97 SE and BR (as in that versions that scene is splitted).

VIDEO SOURCES USED:
-97 SE (own copy)
-BR
-4K83
Both SE and BR added some grain to fit with 4K83.

AUDIO SOURCES:
-4K83
-Laserdisc AC3

2-SparkySywer: Uses Harmy DE v2.5 except Planets Celebration scene where SE 97 Trillary Dump’s Restoration is used and BR for just the added shots.

VIDEO SOURCES USED:
-SE 97 Trillary Dump’s Restoration
-BR
-Harmy Despecialized Edition v2.5

AUDIO SOURCES:
-Harmy Despecialized Edition v2.5
-SE 97 Trillary Dump’s Restoration

Possible future edit:
-It would basically be like the two above but using Disney 4k instead of the BR and that new 97 Restoration you mentioned.

Is it all correct?