[Thinkpad Tablet General] wonderfulme:
Here's the output for the TB-8704X LTE version.

Mount points:

TB-8704X:/ $ mount
rootfs on / type rootfs (ro,seclabel,size=1705664k,nr_inodes=426416)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,size=1811380k,nr_inodes=452845,mode=755)
devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)
proc on /proc type proc (rw,relatime,gid=3009,hidepid=2)
sysfs on /sys type sysfs (rw,seclabel,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,seclabel,relatime)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt type tmpfs (rw,seclabel,relatime,size=1811380k,nr_inodes=452845,mode=755,gid=1000)
none on /config type configfs (rw,relatime)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
/dev/block/dm-0 on /system type ext4 (ro,seclabel,relatime,discard,data=ordered)
/dev/block/bootdevice/by-name/cache on /cache type ext4 (rw,seclabel,nosuid,nodev,relatime,data=ordered)
/dev/block/bootdevice/by-name/persist on /persist type ext4 (rw,seclabel,nosuid,nodev,relatime,data=ordered)
/dev/block/bootdevice/by-name/dsp on /dsp type ext4 (ro,seclabel,nosuid,nodev,relatime,data=ordered)
/dev/block/bootdevice/by-name/modem on /firmware type vfat (ro,context=u:object_r:firmware_file:s0,relatime,uid=1000,gid=1000,fmask=0337,dmask=0227,codepage=437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
tmpfs on /storage type tmpfs (rw,seclabel,relatime,size=1811380k,nr_inodes=452845,mode=755,gid=1000)
adb on /dev/usb-ffs/adb type functionfs (rw,relatime)
/dev/block/dm-1 on /data type ext4 (rw,seclabel,nosuid,nodev,relatime,discard,noauto_da_alloc,data=ordered)
/dev/fuse on /mnt/runtime/default/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /storage/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/read/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/write/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)

Partitions:

TB-8704X:/etc $ df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 1.6G 4.7M 1.6G 1% /
tmpfs 1.7G 652K 1.7G 1% /dev
tmpfs 1.7G 0 1.7G 0% /mnt
/dev/block/dm-0 3.6G 3.2G 336M 91% /system
/dev/block/bootdevice/by-name/cache 248M 744K 242M 1% /cache
/dev/block/bootdevice/by-name/persist 27M 512K 26M 2% /persist
/dev/block/bootdevice/by-name/dsp 12M 4.9M 6.4M 44% /dsp
/dev/block/bootdevice/by-name/modem 84M 74M 10M 88% /firmware
tmpfs 1.7G 0 1.7G 0% /storage
/dev/block/dm-1 52G 14G 38G 27% /data
/dev/fuse 52G 14G 38G 27% /storage/emulated

TB-8704X:/ $ cat /proc/partitions
major minor #blocks name

254 0 524288 zram0
179 0 61071360 mmcblk0
179 1 86016 mmcblk0p1
179 2 1 mmcblk0p2
179 3 8 mmcblk0p3
179 4 512 mmcblk0p4
179 5 512 mmcblk0p5
179 6 512 mmcblk0p6
179 7 512 mmcblk0p7
179 8 2048 mmcblk0p8
179 9 2048 mmcblk0p9
179 10 256 mmcblk0p10
179 11 256 mmcblk0p11
179 12 16384 mmcblk0p12
179 13 1536 mmcblk0p13
179 14 1536 mmcblk0p14
179 15 32 mmcblk0p15
179 16 32 mmcblk0p16
179 17 1536 mmcblk0p17
179 18 16 mmcblk0p18
179 19 15360 mmcblk0p19
179 20 1024 mmcblk0p20
179 21 1024 mmcblk0p21
179 22 65536 mmcblk0p22
179 23 65536 mmcblk0p23
179 24 1024 mmcblk0p24
179 25 3984588 mmcblk0p25
179 26 262144 mmcblk0p26
179 27 32768 mmcblk0p27
179 28 1024 mmcblk0p28
179 29 512 mmcblk0p29
179 30 32 mmcblk0p30
179 31 262144 mmcblk0p31
259 0 32 mmcblk0p32
259 1 512 mmcblk0p33
259 2 1024 mmcblk0p34
259 3 32768 mmcblk0p35
259 4 512 mmcblk0p36
259 5 4096 mmcblk0p37
259 6 128 mmcblk0p38
259 7 128 mmcblk0p39
259 8 256 mmcblk0p40
259 9 256 mmcblk0p41
259 10 256 mmcblk0p42
259 11 256 mmcblk0p43
259 12 256 mmcblk0p44
259 13 256 mmcblk0p45
259 14 256 mmcblk0p46
259 15 256 mmcblk0p47
259 16 8 mmcblk0p48
259 17 65536 mmcblk0p49
259 18 204800 mmcblk0p50
259 19 55492071 mmcblk0p51
179 32 4096 mmcblk0rpmb
253 0 3922408 dm-0
253 1 55492055 dm-1

/system/build.prop, just in case: https://pastebin.com/raw/jQn9N8nc

Kindly let me know if I missed anything.

Also, that Russian site lists the model number as TB-8704X_S000026_170707_ROW_QFIL, while my version of build.prop contains TB-8704X_S000026_170707_ROW (withot the "QFIL"). I'm not entirely up to date on Lenovo's naming conventions, but could that possibly suggest a slightly different model or should we disregard it altogether?

Edit: Nevermind, QFIL seems to be the name of the Qualcomm firmware update software.

Thanks!