So the way it works is that it's an artist collective/polycule that's composed primarily of copies of the same person from different timelines. They specifically recruit themselves from timelines where their creative/engineering/mathematical career went down different paths. So while they can leverage their many diverse skills to do many different parts of their art, they also are similar enough that they can be much more creatively in-sync than two metachronologically distinct people could hope to ever be.
And yes, /polycule. You can't ignore that part. Can you imagine the kind of person who thinks the height of artistic possibility would be to have a whole bunch more Thems? They love themselves. They love love themselves. You give them the ability to travel through timelines and team up and it won't be long before that turns into some kind of weird orgy. Honestly, I wouldn't be surprised if the art collective idea only came up afterwards.
