I'm a huge fan of Incus. VMs, LXC, and OCI containers all under the same Docker-like CLI interface. I run it on a local server and on a dedicated server in a local DC, and connect to both remotely using Nebula.

It includes project-level resource separation, advanced networking, clustering, snapshots, and more. Plus, Stéphane Graber is super responsive on the forums and issue tracker. I bounced off of Proxmox, and can't recommend Incus more for hypervisor-type scenarios.