Hi @Phineas
You need to first use "Get items" to get all items from SharePoint. You could apply filter query if required. Next, you need to add "Select" action, taking the output of value object from get items as input. Use key/value pair in Map parameter to select the properties or columns of the final array.
The output of Select action is the required array from SharePoint list.
If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.