ESXi runs on macs really well, some models are even officially supported by VMware: https://www.vmware.com/resources/compatibility/search.php?deviceCategory=ser

ESXi runs on macs really well, some models are even officially supported by VMware: https://www.vmware.com/resources/compatibility/search.php?deviceCategory=server&details=1&partner=269&releases=448&keyword=Macmini&page=1&display_interval=10&sortColumn=Partner&sortOrder=Asc https://www.vmware.com/resources/compatibility/search.php?de.... And yes, you can run macOS in ESXi, on mac hardware.