Side Panel pop ups are also available configurations in these configurable apps. The apps have some different interactions to display the pop ups so see which one will work the best for your use case.
The minimalist (and embed map) have side panel pop ups. They can display when you click on a feature or if you search for a feature in your feature layer: https://webapps.maps.arcgis.com/apps/Minimalist/index.html?appid=3d75398b402b4d73a53d4fb564512d35
The information lookup app enables you to display information from multiple layers in a side panel pop up. Example
The Geo List app also displays pop up information in a side panel as it guides users through specific features. Example
See which app works best for you or look into custom coding using the link Rickey Fite mentioned
Let us know if you have any questions,
-Kelly