Don’t know if anyone has tried or if it’s well known, but I did. There was a brief period where I could wake it with my Xbox series controllers but then valve pulled the feature for bugs which I never experienced.
I first tried with the dongle which wakes it as expected on my Linux desktop and my steam deck. Then I paired it with Bluetooth mode and was able to wake it without issue.
Any Bluetooth controller can wake the Steam Deck. They had to disable it for a while due to bugs but it was re-enabled in a recent update.