[Motorola One Guides, News, & Discussion] Polyparadox:
The output of ls -l dev/block/bootdevice/by-name is following:

lrwxrwxrwx 1 root root 21 1970-01-01 03:56 DDR -> /dev/block/mmcblk0p25
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 aboot_a -> /dev/block/mmcblk0p9
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 aboot_b -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 apdp -> /dev/block/mmcblk0p48
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 boot_a -> /dev/block/mmcblk0p40
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 boot_b -> /dev/block/mmcblk0p41
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 carrier -> /dev/block/mmcblk0p37
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 cid -> /dev/block/mmcblk0p34
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 cmnlib64_a -> /dev/block/mmcblk0p13
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 cmnlib64_b -> /dev/block/mmcblk0p14
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 cmnlib_a -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 cmnlib_b -> /dev/block/mmcblk0p12
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 devcfg_a -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 devcfg_b -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 dpo -> /dev/block/mmcblk0p50
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 dsp_a -> /dev/block/mmcblk0p23
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 dsp_b -> /dev/block/mmcblk0p24
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 dto_a -> /dev/block/mmcblk0p42
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 dto_b -> /dev/block/mmcblk0p43
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 frp -> /dev/block/mmcblk0p33
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 fsc -> /dev/block/mmcblk0p21
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 fsg_a -> /dev/block/mmcblk0p30
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 fsg_b -> /dev/block/mmcblk0p31
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 hw -> /dev/block/mmcblk0p54
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 keymaster_a -> /dev/block/mmcblk0p15
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 keymaster_b -> /dev/block/mmcblk0p16
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 kpan -> /dev/block/mmcblk0p39
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 logo_a -> /dev/block/mmcblk0p35
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 logo_b -> /dev/block/mmcblk0p36
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 logs -> /dev/block/mmcblk0p47
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 metadata -> /dev/block/mmcblk0p38
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 misc -> /dev/block/mmcblk0p44
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 modem_a -> /dev/block/mmcblk0p19
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 modem_b -> /dev/block/mmcblk0p20
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 modemst1 -> /dev/block/mmcblk0p28
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 modemst2 -> /dev/block/mmcblk0p29
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 mota -> /dev/block/mmcblk0p45
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 msadp -> /dev/block/mmcblk0p49
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 oem_a -> /dev/block/mmcblk0p56
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 oem_b -> /dev/block/mmcblk0p57
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 padA -> /dev/block/mmcblk0p53
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 persist -> /dev/block/mmcblk0p32
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 prov_a -> /dev/block/mmcblk0p17
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 prov_b -> /dev/block/mmcblk0p18
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 rpm_a -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 rpm_b -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 sbl1_a -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 sbl1_b -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 sp -> /dev/block/mmcblk0p55
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 ssd -> /dev/block/mmcblk0p22
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 syscfg -> /dev/block/mmcblk0p46
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 system_a -> /dev/block/mmcblk0p60
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 system_b -> /dev/block/mmcblk0p61
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 tz_a -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root 20 1970-01-01 03:56 tz_b -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 userdata -> /dev/block/mmcblk0p62
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 utags -> /dev/block/mmcblk0p26
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 utagsBackup -> /dev/block/mmcblk0p27
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 vbmeta_a -> /dev/block/mmcblk0p51
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 vbmeta_b -> /dev/block/mmcblk0p52
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 vendor_a -> /dev/block/mmcblk0p58
lrwxrwxrwx 1 root root 21 1970-01-01 03:56 vendor_b -> /dev/block/mmcblk0p59

Unfortunately I don't have root so I can't execute the second one.

But TWRP booted up!