Custom Column for Cover Size

I have been searching all over to figure this out, even used Open AI, and it keeps giving me the wrong answer.

How do I create a custom column that has the cover size in a format like it's shown in the book details? My send to Kindle covers are not showing up in some devices and I want to make sure I also have the best size for showing on my scribe. I know the plugin for Quality check looks for covers of a specific size, but I just want a column to look over quickly.

Please and thank you for any help :)