One of the lists I've created is defaulted with this interface:
I want it to be able to default with "new item or edit this list" instead as such:
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This usually happens when you create a list by exporting data from a Microsoft Excel table. It creates a datasheet view as default view and that is why the "stop editing" shows as default.
To change that, create an entirely new view (not based on the existing default view). Select "standard" as view type, pick the fields you want to show and make sure to select the check box "make default view".
PS--- some terms may not be exactly as it is on SharePoint. Will edit this answer when I have access to my SharePoint site. Thanks.