Look for the videos of "ArtIsRight" on Youtube on the MacBook Pro about 16 or 32 GB. Contrary to must reviews, for photography it makes a difference "when editing" photos if the computer has 16 or 32 GB. For anything else, including video, 16 GB is fine. He shows it in video with different new MacBok Pros (Pro and Max) and gives tips on how to decide what to get depending on your creative field.
Also, take note that if you open a program that uses 2 GB, and you then open a file within that program, that file is going to contribute to the overall RAM being used. Then, for example Photoshop (2 GB) + Photoshop File (2 GB) = 4 GB. (This example is, of course, an estimation)