If you have a way to get a list of your images into Excel, you could set this up as a data merge. Add an image frame large enough to accomodate your largest image, and set up the merge with as many as will comfortably fit on the page.
I have discovered the 'ImageCatalog' from the scripts panel. You can place all images in a folder. On the ImageCatalog dialog box, I have unchecked the Proportional and Frame to Content option to place the images in 100%. Now, I am looking for a way to expand all the graphic frames to reveal all the images it placed on the document automatic or by script. You can reveal the whole image by double-clicking on the bottom-right handle but it would take a lot of time if you do this one by one. I need help on how to automate the expansion of the frames.
Let me know. Thank you very much.
Select all objects then adjust the Frame Fitting options.
Be sure to set your Reference Point first.... Object > Fitting > Fit Frame to Content.
Hope it helps.