I've made 168 title screens (IFF images with black borders) to suit the AGA menu (256 colours and 640x200 pixels). A lot of the popular and top rated games are included.
They can be accessed and downloaded here:
https://drive.google.com/folderview?...Wc&usp=sharing
I was able to batch process the images in Ultimate Paint (PC program) which resizes the images, converts them to IFF and makes them transparent (black edges, instead of coloured).
Enjoy!