[Galaxy S 5 Android Development (Snapdragon)] MallardDuck:
Since there isn't a T-mobile specific thread, I figure it'd be a good place to start.

For more info, see the T-Mobile variant thread I created.

u0_a214@kltetmo:/ $ ls -al
drwxr-xr-x root root 2013-12-31 20:56 .system
drwxr-xr-x root root 2013-12-31 20:56 acct
drwxrwx--- system cache 2014-04-27 01:16 cachedr-x------ root root 2013-12-31 20:56 config
lrwxrwxrwx root root 2013-12-31 20:56 d -> /sys/kernel/debug
drwxrwx--x system system 2014-04-26 10:32 data
-rw-r--r-- root root 255 1969-12-31 19:00 default.prop
drwxr-xr-x root root 2014-04-25 15:11 dev
drwxrwx--x system radio 2014-04-25 13:20 efs
lrwxrwxrwx root root 2013-12-31 20:56 etc -> /system/etc
-rw-r--r-- root root 23967 1969-12-31 19:00 file_contexts
dr-xr-x--- system system 2013-12-31 20:56 firmware
dr-xr-x--- system system 2013-12-31 20:56 firmware-modem
-rw-r----- root root 1833 1969-12-31 19:00 fstab.qcom
-rwxr-x--- root root 566100 1969-12-31 19:00 init
-rwxr-x--- root root 4262 1969-12-31 19:00 init.carrier.rc
-rwxr-x--- root root 879 1969-12-31 19:00 init.container.rc
-rwxr-x--- root root 1346 1969-12-31 19:00 init.environ.rc
-rwxr-x--- root root 1702 1969-12-31 19:00 init.mdm.sh
-rwxr-x--- root root 7064 1969-12-31 19:00 init.qcom.class_core.sh
-rwxr-x--- root root 6788 1969-12-31 19:00 init.qcom.early_boot.sh
-rwxr-x--- root root 11239 1969-12-31 19:00 init.qcom.factory.sh
-rwxr-x--- root root 26062 1969-12-31 19:00 init.qcom.rc
-rwxr-x--- root root 2742 1969-12-31 19:00 init.qcom.ril.sh
-rwxr-x--- root root 7248 1969-12-31 19:00 init.qcom.sh
-rwxr-x--- root root 4561 1969-12-31 19:00 init.qcom.ssr.sh
-rwxr-x--- root root 3554 1969-12-31 19:00 init.qcom.syspart_fixup.sh
-rwxr-x--- root root 44934 1969-12-31 19:00 init.qcom.usb.rc
-rwxr-x--- root root 7766 1969-12-31 19:00 init.qcom.usb.sh
-rwxr-x--- root root 46647 1969-12-31 19:00 init.rc
-rwxr-x--- root root 2890 1969-12-31 19:00 init.ril.rc
-rwxr-x--- root root 3572 1969-12-31 19:00 init.ril.sh
-rwxr-x--- root root 12023 1969-12-31 19:00 init.target.rc
-rwxr-x--- root root 1795 1969-12-31 19:00 init.trace.rc
-rwxr-x--- root root 3915 1969-12-31 19:00 init.usb.rc
drwxrwxr-x root system 2013-12-31 20:56 mnt
drwxr-xr-x system system 2013-12-31 20:56 persdata
drwxrwx--x system system 2013-12-31 19:00 persist
dr-xr-xr-x root root 1969-12-31 19:00 proc
-rw-r--r-- root root 3567 1969-12-31 19:00 property_contexts
-rw-r--r-- root root 1509 1969-12-31 19:00 publiccert.pem
drwx------ root root 2014-03-26 00:28 root
drwxr-x--- root root 1969-12-31 19:00 sbin
lrwxrwxrwx root root 2013-12-31 20:56 sdcard -> /storage/emulated/legacy
-rw-r--r-- root root 7300 1969-12-31 19:00 seapp_contexts
-rw-r--r-- root root 1712341 1969-12-31 19:00 sepolicy
-rw-r--r-- root root 236 1969-12-31 19:00 sepolicy_version
drwxr-x--x root sdcard_r 2013-12-31 20:56 storage
dr-xr-xr-x root root 2013-12-31 20:56 sys
drwxr-xr-x root root 2013-12-31 19:04 system
drwxr-xr-x root system 2014-04-25 15:11 tmp-mksh
lrwxrwxrwx root root 2013-12-31 20:56 tombstones -> /data/tombstones
-rw-r--r-- root root 8849 1969-12-31 19:00 ueventd.qcom.rc
-rw-r--r-- root root 17983 1969-12-31 19:00 ueventd.rc
lrwxrwxrwx root root 2013-12-31 20:56 vendor -> /system/vendor

As you can see this one looks very similar to the G900F variant.

u0_a214@kltetmo:/dev/block/platform/msm_sdcc.1/by-name $ ls -al <
lrwxrwxrwx root root 2013-12-31 20:56 aboot -> /dev/block/mmcblk0p6
lrwxrwxrwx root root 2013-12-31 20:56 apnhlos -> /dev/block/mmcblk0p1
lrwxrwxrwx root root 2013-12-31 20:56 backup -> /dev/block/mmcblk0p18
lrwxrwxrwx root root 2013-12-31 20:56 boot -> /dev/block/mmcblk0p15
lrwxrwxrwx root root 2013-12-31 20:56 cache -> /dev/block/mmcblk0p24
lrwxrwxrwx root root 2013-12-31 20:56 dbi -> /dev/block/mmcblk0p4
lrwxrwxrwx root root 2013-12-31 20:56 ddr -> /dev/block/mmcblk0p5
lrwxrwxrwx root root 2013-12-31 20:56 efs -> /dev/block/mmcblk0p12
lrwxrwxrwx root root 2013-12-31 20:56 fota -> /dev/block/mmcblk0p17
lrwxrwxrwx root root 2013-12-31 20:56 fsc -> /dev/block/mmcblk0p19
lrwxrwxrwx root root 2013-12-31 20:56 fsg -> /dev/block/mmcblk0p9
lrwxrwxrwx root root 2013-12-31 20:56 modem -> /dev/block/mmcblk0p2
lrwxrwxrwx root root 2013-12-31 20:56 modemst1 -> /dev/block/mmcblk0p13
lrwxrwxrwx root root 2013-12-31 20:56 modemst2 -> /dev/block/mmcblk0p14
lrwxrwxrwx root root 2013-12-31 20:56 pad -> /dev/block/mmcblk0p10
lrwxrwxrwx root root 2013-12-31 20:56 param -> /dev/block/mmcblk0p11
lrwxrwxrwx root root 2013-12-31 20:56 persdata -> /dev/block/mmcblk0p22
lrwxrwxrwx root root 2013-12-31 20:56 persist -> /dev/block/mmcblk0p21
lrwxrwxrwx root root 2013-12-31 20:56 recovery -> /dev/block/mmcblk0p16
lrwxrwxrwx root root 2013-12-31 20:56 rpm -> /dev/block/mmcblk0p7
lrwxrwxrwx root root 2013-12-31 20:56 sbl1 -> /dev/block/mmcblk0p3
lrwxrwxrwx root root 2013-12-31 20:56 ssd -> /dev/block/mmcblk0p20
lrwxrwxrwx root root 2013-12-31 20:56 system -> /dev/block/mmcblk0p23
lrwxrwxrwx root root 2013-12-31 20:56 tz -> /dev/block/mmcblk0p8
lrwxrwxrwx root root 2013-12-31 20:56 userdata -> /dev/block/mmcblk0p25