Better options for title in ImageGrid

Following issue #370 I can get titles in imagegrid, but they touch the top edge of the image, and don't look great (top left image on my mockup)

I have done a quick mockup of 3 useful options for journal publications. Can you implement these?

thanks

<img width="484" alt="Image" src="https://github.com/user-attachments/assets/b9eccb67-80f1-4aae-a85a-e8dd00543027" />
