Yes, much of the above is correct. Regarding Phantom Manor in DLP, since it is a darker theme and also more tied into DLP's nearby version of BTMRR, and Thunder Mesa, which is also more based off of the original never built Western River Expedition.
From 1992 to 2018 the photos were of a young Melanie Ravenswood in 4 scenes:
1: having a picnic with her lone suitor (from that version) Jake Evans, meanwhile ants, a rattlesnake, scorpion, spiders and beetles invade their meal.
2: Melanie picking roses with a tombstone below that a skeleton is emerging from the ground beneath.
3: Swimming through a stream as a water monster grabs for her foot.
4: Holding a parasol in a canoe that is about to go over a waterfall.
Since the major refurb the stretching photos are of each of her suitors:
Iggy Knight standing on crates of TNT with a barrel of such about to explode
Sawyer Bottom on a log about to be sawed in half
Barry Claude sitting in a tree missing a shoe while bears growl at him from down below
Capt. Rowan D. Falls in rowboat about to crash over a waterfall
The attic "hanging scene" in that room also changed, originally it was the Phantom hanging Melanie's Fiance Jake, now it is just the Phantom evilly laughing and holding a noose.