Well the kubernetes API has all the necessary parts built in mostly, although sometimes you may want to install a custom resource which often comes with complex service installs.
But I think the biggest strength of kubernetes is all the foss projects that are available for it. Specifically external-dns, cert-manager, and istio. These are separate projects and will have to be installed after the cluster is up.
Caution, not all cloud providers support istio. I know that Google’s GKS doesn’t, they make you use their own fork of it
I would also recommend you avoid helm if possible as it obfuscates what the cluster is doing and might make learning harder. Try to just stick to using kubectl if possible.
I have heard good things about nomad too but I have yet to try it.