The info for the Middle Earth Collection 4K for the BDs is all wrong. All the BD discs for LOTR are remastered with Dolby Atmos, audio and sub info as follows:
LOTR theatrical BDs:
Audio
English: Dolby Atmos
Spanish: Dolby Digital 5.1 EX
French: DTS-HD Master Audio 5.1
Subtitles
English SDH, French, Spanish
LOTR Extended Cut BDs:
English: Dolby Atmos
French: DTS-HD Master Audio 6.1
Subtitles
English SDH, French, Spanish