I originally mentioned this as a comment on page 3 of "Automation Space - Better Organization Tools" though my comment is kind of lost at the tail end of that post. Our company has over 600 automations created by 10 Admins, and trying to find the automation you need in that massive list is punishing. I have often wished that the "Group" feature available for Request Forms was also available for Automations, so that I could "Group" by "Created By," then sort within each Group by "Title" (or something else). It would still be an enormous list to shuffle through, but the ability to collapse those groups would be a huge help.
Toby Cashook's idea of adding folders would also be a fantastic organizational tool, since certain automations are geared towards a single workflow, and keeping those automations together in some way (beyond just naming architecture) would be helpful when adjusting a workflow. Folders AND Groups would go a long way towards taming the chaos that currently is our Automations space.