I couldn’t find all the sources for the diagrams but some of them are in the latest version on this fork by @fepitre and you can edit them with app.diagrams.net (foss):
That sounds great! Here’s some extra feedback:
For this one, it makes more sense to me to view it upside-down: VMs on top; hardware on the bottom, following the typical logic of high-level being on top and low-level being bellow.
I think from the second to the third the colors and positions of the VMs could match. Not that it makes a lot of difference, but the mapping may make things even more apparent.
If we think any of these changes we’re discussing are valuable, maybe we could open a github issue and related pull requests addressing them?