Lightroom Classic: Indicate and search which photos have been exported

It would be extremely useful to have an option to filter images by export status. It would make my workflow much cleaner if I could "show photos that have NOT been exported yet."

I am a wrestling photographer and often end up with tens of thousands of images from a tournament. I'll often need to quickly edit some matches from the resulting images and then come back to the album to finish, sometimes months and even years later.

Because of this, I will often end up with different sections of an event in different stages of editing - some have been culled, some have been developed, some have been exported, and some haven't been reviewed at all. There are ways for me to separate out all of the different stages (flagged/unflagged, sort by edit time, etc) except for those that have been culled from those that have been developed and exported.

I can make a workaround by labeling large groups with a color or a rating, but I use those structures for different things, and therefore it doesn't always work. Plus, it's another step to remember to label them after I've culled them, but before I've developed and exported them, and then to label/unlabel after doing so. Having a filter category of exported/not exported would make things so much easier, efficient, and reliable.

Thank you!