List all User Accounts

~ % /usr/bin/dscl . -list /Users

will return an output as:

_mysql
_nearbyd
_netbios
_netstatistics
_networkd
_neuralengine
_notification_proxy
_nsurlsessiond
_oahd
_ondemand
_postfix
_postgres
_qtss
_reportmemoryexception
_rmd
_sandbox
_screensaver
_scsd
_securityagent
_sntpd
_softwareupdate
_spotlight
_sshd
_svn
_taskgated
_teamsserver
_terminusd
_timed
_timezone
_tokend
_trustd
_trustevaluationagent
_unknown
_update_sharing
_usbmuxd
_uucp
_warmd
_webauthserver
_windowserver
_www
_wwwproxy
_xserverdocs
accadmin
daemon
nobody
radu.parvu
root
testfinder

Show a User Account Information

$ /usr/bin/dscl . -read /Users/<USER_ACCOUNT>

So, the command:

bash-3.2$ /usr/bin/dscl . -read /Users/testfinder

will return:

…

NFSHomeDirectory: /Users/testfinder
Password:
Picture:
/Library/User Pictures/Fun/Yin-Yang.heic
PrimaryGroupID: 20
RealName:
Test Finder
RecordName: testfinder
RecordType: dsRecTypeStandard:Users
UniqueID: 503
UserShell: /bin/zsh
bash-3.2$

Follow the command to Delete a User Account

$ sudo /usr/bin/dscl . -delete /Users/<USER_ACCOUNT>

bash-3.2$ sudo /usr/bin/dscl . -delete /Users/testfinder