Looks like in your lab you are using Image Profile in that case this will be helpful but in most of the environments Image profile will not be used in that case the one you shared will not display.
I got one command esxcli software profile get
There is another command which exactly tells which ISO Image was used to install ESXi.
S Pavan Kumar
From the ESXi host's command line run:
esxcli software profile get
PS: It looks like you found the command just before I posted my reply ;-)
I had noticed another command which will exactly tell the ISO used for Install...
But unfortunately I am unable to recall that