I checked the elements and see that there is no way to vertical align images if you use Media grid or images gallery. So, we would recommend you to edit images and make all of them the same size (200×200 for example https://gyazo.com/ab834ff39250a32f1be1e85998a7791b ).
Or create 5 columns row and add a single image with a link to every column and choose the column alignment middle.
