Also, if you can manage to get the amount of funds used by ICE/CBP per period then you can also show how much is being sunk into this process too.
You could collect oral accounts and invite people to submit them.
From the grapevine (and this makes sense because they're pushing into new numerical territory, and also don't care at all) the conditions are very crowded / harsh. You could also include accounts from family members about the kafkaesque absence of information, e.g. It's good to make the point that almost every number in this chart is a human, and a family and circle of friends, who harmed no one and is being severely harmed.