I am trying to figure out if it would be safe to plug my Steam Deck's charger into my Switch (they're both USB-C)

And it looks like Switch charger says it outputs "5 V 1.5 A / 15 V 2.6 A", and Steam Deck says "5 V 3 A / 9 V 3 A / 15 V 3 A / 10 V 2.25 A"

Wh-which one is it. That's a LOT of outputs