Lsblk

lsblk* lsblk^[1] list block devices produces output as follows:
ralph@c3po:~$ lsblk
NAME              MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0               7:0    0 258.7M  1 loop /snap/qt551/39
loop1               7:1    0 258.7M  1 loop /snap/qt551/40
loop2               7:2    0 113.9M  1 loop /snap/core/13308
loop3               7:3    0  55.6M  1 loop /snap/core18/2538
loop4               7:4    0  55.5M  1 loop /snap/core18/2409
loop5               7:5    0   114M  1 loop /snap/core/13425
sda                 8:0    0   1.8T  0 disk 
├─sda1              8:1    0   512M  0 part /boot/efi
├─sda2              8:2    0   744M  0 part /boot
├─sda3              8:3    0    24G  0 part 
│ └─c3po--vg-root 254:1    0    25G  0 lvm  /
├─sda4              8:4    0   1.7T  0 part 
│ └─ssd-virtual   254:0    0   1.8T  0 lvm  /virtual
├─sda5              8:5    0   1.1G  0 part 
│ └─c3po--vg-root 254:1    0    25G  0 lvm  /
└─sda6              8:6    0  56.3G  0 part 
  └─ssd-virtual   254:0    0   1.8T  0 lvm  /virtual
sdb                 8:16   0   1.8T  0 disk 
├─sdb1              8:17   0 219.7G  0 part 
├─sdb2              8:18   0    32G  0 part [SWAP]
├─sdb3              8:19   0 911.8G  0 part 
│ ├─hdd-home      254:2    0   1.2T  0 lvm  /home
│ ├─hdd-var_log   254:3    0     1G  0 lvm  /var/log
│ ├─hdd-iso       254:4    0   120G  0 lvm  /virtual/iso
│ └─hdd-tmp       254:5    0   1.8G  0 lvm  /tmp
├─sdb4              8:20   0 219.7G  0 part 
├─sdb5              8:21   0 219.7G  0 part 
│ └─hdd-home      254:2    0   1.2T  0 lvm  /home
└─sdb6              8:22   0   260G  0 part 
  └─hdd-home      254:2    0   1.2T  0 lvm  /home
mmcblk0           179:0    0    15G  0 disk 
├─mmcblk0p1       179:1    0   1.6G  0 part 
├─mmcblk0p2       179:2    0     1K  0 part 
├─mmcblk0p5       179:5    0    32M  0 part /media/ralph/SETTINGS
├─mmcblk0p6       179:6    0    66M  0 part /media/ralph/boot
└─mmcblk0p7       179:7    0  13.3G  0 part /media/ralph/root