Source: Bluray Remux
English subtitles

The.Mummy.1999.1080p.BluRay.10Bit.HEVC.EAC3.5.1-jmux
The.Mummy.Returns.2001.1080p.BluRay.10Bit.HEVC.EAC3.5.1-jmux
The.Mummy.Tomb.of.the.Dragon.Emperor.2008.1080p.BluRay.10Bit.HEVC.EAC3.5.1-jmux

All films have similar bitrate compared to the below from The Mummy (1999):

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main [email protected]@High
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 4 min
Bit rate : 9 008 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.181
Stream size : 7.85 GiB (93%)
Language : English
Default : Yes
Forced : No
Color range : Limited

Audio
ID : 2
Format : E-AC-3
Format/Info : Enhanced AC-3
Commercial name : Dolby Digital Plus
Codec ID : A_EAC3
Duration : 2 h 4 min
Bit rate mode : Constant
Bit rate : 640 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Bit depth : 32 bits
Compression mode : Lossy
Delay relative to video : -42 ms
Stream size : 571 MiB (7%)
Language : English
Service kind : Complete Main
Default : Yes
Forced : No