Nomad seems to be a truly "lightweight Kubernetes"
k3s requirements: 1 node, 512MB RAM, 1 CPU core
Nomad requirements: "Nomad servers may need to be run on large machine instances. We suggest having between 4-8+ cores, 16-32 GB+ of memory, 40-80 GB+ of fast disk and significant network bandwidth."
https://docs.k3s.io/installation/requirements
https://developer.hashicorp.com/nomad/docs/install/productio...