Let's just create a role that populates the Linode inventory..

playbooks/inventory/linode_inventory.yml

@@ -0,0 +1,16 @@
+---
+- name: Build Inventory from Linode
+  hosts: localhost
+  gather_facts: false
+
+  roles:
+    - populate_inventory
+
+- name: Test connection to Linode VMs
+  hosts: all
+  gather_facts: false
+
+  tasks:
+    - name: Ping each Linode
+      ansible.builtin.ping
+