A point was brought up, in a reaction video, that I hadn't thought of: what about the bus driver? I don't recall anyone on Team Flash mentioning that one of the 12 metas was the driver. He was on the bus, so wouldn't he have been affected, too? Is DeVoe overlooking him, or was he, somehow, not affected, and so not part of the equation?
Also, there IS a chance that we can get Ralph back. Since DeVoe needs his resilient body, he won't be body-hopping out of it, so it'll stay alive. We just need for Ralph to still be alive in there, somewhere - a concept not unfamiliar to comic books. If we don't get him back, I shall be very cross; he's too much fun to lose. Plus, he hasn't had the chance to be in a crossover yet - I want to see Oliver having to put up with Ralph!