Ask HN: Any Multiple Desktops/system, single-login for *nix?

You walk into your spacious office, sit down in front of many, many monitors, login in one monitor, and all monitors come alive. Stuff of Hollywood, brokerage office or hackers’ den? Or not?

I’ve tried to find this kind of elite stuff and failed.

Is it just me or there isn’t a desktop (or is that called a session) manager that would allow a single user to log on just one screen and open up all the local *nix-based PCs’ login screen?

I know of just one vendor (that I have forgotten) of Windows platform can do this but … But … BUT Linux (or BSD?)

A little help for this home lab user?