This is a great explanation, thanks for checking this out in your lab

It is interesting that I have most of my VMs that are steady state with all of their memory coming from local memory

I have a handful of VMs (just 4 or 5) that are getting some portion of their memory from remote memory or bouncing around indicating a NUMA migration as you mentioned

Now I need to figure out why. What is unique about these VMs that has them doing quite a few NUMA migrations where other VMs never migrate