Films

Japan TC Entertainment Blu-ray has exclusive extras

BFI Blu-ray for both original Czech and English dub audio in lossless format

Athanor The Films of Jan Svankmajer Blu-ray has exclusive extras

Comparison between the US and International mixes: https://vimeo.com/246332731

The 4K Blu-Ray and the 2001 MGM DVD have exclusive extras.

HDR helps considerably with the deliberately murky aesthetic. VDMS encode is overall very good despite chroma noise in flashback sequences.

StudioCanal was overseen and approved by Nicolas Roeg and has a more filmic color grade than the Warner Archive Blu-Ray. 

4K Blu-ray has exclusive “unrated” audio with a small change to one line under the request of David Fincher (removed the poor dub over of frickin’ in the line “Screw it, let’s gut the f**kin’ nerd.”).

The UK 4K Blu-ray and Canada 4K Blu-ray both do not have the low-pass that the US 4K Blu-ray has. The UK 4K Blu-ray has some general blockiness and chroma artifacting issues, but the Canada 4K Blu-ray has at least a handful of scenes where the encode completely falls apart and massive macroblocks are visible. The Canada 4K Blu-ray also does not have hardcoded forced subtitles for the newsreel scene like the US and UK 4K Blu-rays. The grade is the same between all three discs.

See tenia's review of the French 4K Blu-ray but no comparison available

The Atmos mix is the same between the US 4K Blu-ray and the UK 4K Blu-ray save for the amount of dynamic objects: the UK 4K Blu-ray has 15 to the USA's 11.
The UK 4K Blu-ray also has a DD-EX compatibility track and a lossless version of the commentary track that is in Dolby Digital on the US and Canada 4K Blu-rays.

UK 4K plays fine in motion https://forum.blu-ray.com/showpost.php?p=24007274&postcount=181

Arrow 4K Blu-ray has a better encode than the Kino Lorber and Capelight 4K Blu-rays. Capelight 4K Blu-ray looks low-passed in comparison to the Arrow but is slightly closer to the Arrow in PQ than the Kino Lorber. 

Subtle difference in encoding to the Criterion in encoding, trading blows in different shots, with Plaion taking a slight edge with less highlight blocking

Criterion's 2.0 sounds muffled due to noise reduction and EQ.
Plaion's 2.0 lacks bass and has a very bright EQ, more resembling the 5.1 remix. Plaion’s 2.0 doesn't have any filtering unlike the Criterion, see https://forum.blu-ray.com/showpost.php?p=23831289&postcount=110

> US Shout! Factory, better encoding by Engine House and redone opening credits, errors present in Shout! Factory fixed

Mono is from an alternate higher fidelity source than Shout! Factory.

Disney 4K Blu-ray has encoding issues with bitrates dipping into 40mbps, and Kaleidescape has better encoding than Disney see caps 
Old Fox Blu-ray master is stretched and sharpened