US Toho/GKIDS 4K Blu-ray

US Toho/GKIDS 4K Blu-ray > France 4K Blu-ray > Japan Toho 4K Blu-ray; caps

US disc includes original Japanese intertitles, as well as stylized English translations for all of them, both burned-in.

US Toho/GKIDS 4K Blu-ray has no limiting, unlike other releases.

US Toho/GKIDS 4K Blu-ray has a new English dub, different from the old Funimation US Blu-ray

Entertainment in Video UK 4K Blu-ray

Entertainment in Video UK 4K Blu-ray or French Metropolitan 4K Blu-ray

Entertainment in Video UK 4K Blu-ray

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.