I recently migrated off of a pair of ESXi servers, and consolidated down to just put my VMs on my TrueNAS Scale server, primarily to save power and generation so that I would only be running two servers instead of four. It’s not as fancy or flexible, but the VMs run and do what I need.
1 Dell R620 w/8x 2TB SSD in RAIDZ2 + JBOD w/16x 3TB HDD in 2xRAIDZ2 pool - NAS + VMs for Plex, k8s, ansible/terraform, etc. (TrueNAS Scale)
Unifi UDMPro + 3APs
Unifi 10Gb Aggregation Switch
Unifi 24-port POE switch standard
I then have another pair of R620s, plus 2 more JBOD trays and disks as cold spares. I may run the servers some during the winter, but it’s too hot in the garage closet in the summer to run them all without additional cooling.