Note, i'm referring specifically to a true cluster, where one Pi presents the compute power of the others, as opposed to what is usually termed a 'cluster' in the rPi world, which is just a compact stack of individual units, like this
If not, it sounds like i have my latest project!
Sad to say that TuringPi version 1 (as it is today) uses RPi3 compute modules. So ESXi ARM is not supported. I believe that TuringPi has plans for a new version/model that 2 will have RPi4 compute modules but other than the info on their web page, it is not real yet.