PowerCLI has an hidden vc alias, I can't figure where it comes from and whether there's more of its like

A few years ago, I accidently stumbled upon an "hidden" PowerShell alias in VMware PowerCLI, vc, which can be used instead of Connect-ViServer. This vc command is invisible to both Get-Command and Get-Alias, it's not recognized by command completion (not that you really need it to), and I could only relate it to Connect-ViServer by its output and behavior.

I found this specific pseudo-alias to be pretty useful in my PowerCLI work, and I always wondered how this worked, and whether there were other such hidden shortcuts. Today, I searched my system for 2-letter and 3-letter commands unknown to Get-Command, and the only ones that came out beside vc were shortened Get-* commands (as explained by @vrdse below).

1. Can anyone explain where/how this vc pseudo-alias is defined ?
2. How can I find similar hidden commands more efficiently than with the below script or by sheer luck ?

Here's my (quick and dirty) script for 3-letter aliases, which ran for about an hour (!) on my system, and found nothing but shortened Get-* commands :
(Caution: blindly running random commands as I did is NOT recommended)

$az = [char[]]('a'[0]..'z'[0])
foreach ($i in $az) {
    write $i
    foreach ($j in $az) {
        write $i$j
        foreach ($k in $az) {
            if (!(gcm -ea ig $i$j$k)) {
                try {iex $i$j$k; write-warning $i$j$k} catch {}
            }
        }
    }
}

As I stated already in the comments, PowerShell doesn't require the Get- of Get-* commands, such as Get-Vhd. Instead, you can just type Vhd. That being said, you can check for aliases for Connect-ViServer.

Get-Alias -Definition Connect-ViServer
-----------     ----        
Alias           Get-ESX     
Alias           Get-VC      
Alias           Get-VIServer

You see, that in fact there are some aliases to it. One of which is Get-VC, thus vc is possible.