Grouping/linking multiple entries

For my site, I’m generating a bunch of variable content entries on the pages. One page in particular is serving as an archive and will contain a lot of images that are loosely organized. Would be great if there could be an implementation of entry grouping or linking (either “permanent” or temporary) to help shuffle entries around as they’re organized so it wouldn’t need to be done one at a time.

Attached some images to illustrate what I’m working on. Would be really great for quick organization if all images/text from one project could be linked together once they’re set properly so that they can be sorted by date, etc. easier.