It's written "LKE supports integration [...] with Rancher", how ?
By looking here it's written that LKE can be integrated to Rancher but how ? We can deploy a RKE (Rancher Kubernetes Managed) with Linode-hosted nodes but can I create a LKE from Rancher as I can do with AWS EKS, Azure AKS or Google GKE ?
Is there a way to achieve that ? By creating the LKE and then using the "Import an existing cluster" (and then
kubectl apply -f https://my-rancher.com/v3/import/some.yaml) ?
Right now, deploying a Kubernetes cluster with Linode is something you can do in Rancher. There is a plugin for Linode that allows you to manage your Kubernetes cluster. We have a guide which shows you how to set this up:
Deploying Kubernetes on Linode with Rancher 2.3
You're right, that is for an RKE using Linode. If you want to purely use the LKE, I recommend following our guides which show you how to deploy it via API or with the Cloud Manager.