Just about everything is Proxmox for me, though a few things are just Debian.

I use LXCs, in general I don’t like Docker so I avoid it in most cases. I have a couple VMs for it where I may spin something up to test, but if its around long-term it gets moved to an LXC. Usually because I prefer a bit more control on setup, and find it more manageable than having a bunch of mounts for everything. It also keeps things arranged in a way I prefer, gives me a single interface to access what I want, and makes backup more straightforward.

Whether I want a whole VM or just to run a single app as a service, I only have to go to one spot to do it.