Show non-truncated usernames of users connected to sshd server in terminal?

On my Ubuntu server, I find it very useful that netstat -tulpn also shows the username connected to sshd (apparently, this username printing is specifically for sshd) - unfortunately, this printout is also truncated:

$ sudo netstat -tulpn | grep 'PID\|user1'
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:12345           0.0.0.0:*               LISTEN      1620557/sshd: user1
tcp6       0      0 :::12345                :::*                    LISTEN      1620557/sshd: user1

In the above example, full username is user1234, but due to truncation, I can only read user1. Even more unfortunately, I learned that this truncation is hardcoded in netcat in https://unix.stackexchange.com/questions/212096/netstat-output-line-width-limit/772314#772314 : > Unfortunately the width of the PID/Program name column in netstat is hardcoded with [#define PROGNAME_WIDTH 20](https://sourceforge.net/p/net-tools/code/ci/master/tree/netstat.c#l110) so there is no way of getting the full output from netstat directly. Also you end up with 19 characters and a space at the end. The same answer also recommends: > In today's linux one can use sudo ss -natp to get the full info formatted a bit differently but with the full name: ... unfortunately, ss does not print the username of the user connected to sshd as netstat does:

$ sudo ss -tulpn | grep user1
$

$ sudo ss -tulpn | grep 12345
tcp     LISTEN   0        128              0.0.0.0:12345          0.0.0.0:*      users:(("sshd",pid=1620557,fd=10))

tcp     LISTEN   0        128                 [::]:12345             [::]:*      users:(("sshd",pid=1620557,fd=11))

So, how can I get an output identical or similar to the output of netstat -tulpn, but which prints the full usernames connected to sshd? My netstat version is:

$ netstat --version
net-tools 2.10-alpha
Fred Baumgarten, Alan Cox, Bernd Eckenfels, Phil Blundell, Tuan Hoang, Brian Micek and others
+NEW_ADDRT +RTF_IRTT +RTF_REJECT +FW_MASQUERADE +I18N +SELINUX
AF: (inet) +UNIX +INET +INET6 +IPX +AX25 +NETROM +X25 +ATALK +ECONET +ROSE -BLUETOOTH
HW:  +ETHER +ARC +SLIP +PPP +TUNNEL -TR +AX25 +NETROM +X25 +FR +ROSE +ASH +SIT +FDDI +HIPPI +HDLC/LAPB +EUI64