Depening on the article type of the article itself in MME, the list will display the articles differently. Eg: opinion, grafiek-van-de-dag, in-memoriam, etc
Opinion has the biggest change: an article list will never show the mainasset. Instead, the author image is shown (in case there is an image, and in case the article has only one author and not multiple authors).
Also, depending on the width of the column, the opnion-article will look differently. You can see an example on the right and below.