Here’s a few others just to keep the discussion going 😃

Werewolf of London- The BD features an odd drop in volume during the last 15 or 20 minutes. This does not occur on the DVD versions

Dracula’s Daughter- Two different opening credit sequences

Son of Frankenstein- The BD features a few extra scenes/takes not on the VHS/DVD version

https://m.youtube.com/watch?v=JSoAcmsPmmA

The Invisible Man Returns- Nothing significant offhand

The Mummy’s Hand- Nothing significant offhand

The Invisible Woman- Nothing significant offhand

Ghost of Frankenstein- Nothing significant offhand

Invisible Agent- Nothing significant offhand

The Mummy’s Tomb- Early pressings of the VHS lacked Kharis killing Mary Gordon’s character and his return to the crypt as seen here (skip to 34:57)

https://www.youtube.com/watch?v=UVsMznzH9pY

This was corrected on later pressings. The DVD and BD editions have the footage intact. The BD does skip 2-3 frames in the scene on the ship.

Frankenstein meets the Wolf Man- Nothing significant offhand

Son of Dracula- The 1991 VHS has a re-recorded version of the Universal globe theme. The DVD and BD versions have the correct recording. The BD removes the ad for war bonds at the end of the film seen on the DVD.

The Invisible Mans Revenge- Nothing significant offhand

The Mummy’s Ghost- Nothing significant offhand

House of Frankenstein- A glitch appeared in one scene where two shots repeated on the 2001 and 2004 DVDs. The 2014 DVD and 2016 BDs have the scene corrected. The BD has a few frames dropped in one scene.

The Mummy’s Curse- Nothing significant offhand

House of Dracula- Nothing significant offhand

Revenge of the Creature- VHS and DVD versions have it in open matte 2D. BD has it in widescreen in both 2D and 3D. Early pressings of the BD had the 3D version authored incorrectly. This was quickly corrected though many still complain the 2D looks too soft.

The Creature Walks Among Us- VHS and DVD versions have it in open matte. The BD have it in widescreen.