https://mastodon.social/@Raspberry_Pi@raspberrypi.social/109478683048782499
https://twitter.com/Raspberry_Pi/status/1600761840367448064 (Check how many hidden replies there are)
https://mastodon.social/@Raspberry_Pi@raspberrypi.social/109477484347778254
Linking some choice examples.
I'm assuming most of these will work as the hardware for a pihole?
PiHole just requires anything that can essentially run as a supported Linux distro. https://docs.pi-hole.net/main/prerequisites/ so your assumption is probably correct based on a sampling of those suggestions I looked up.
I currently have it in a Debian VM on my server (i.e. an old Thinkpad), but I've also run it in the past on both a raspberry pi 1 and 2, since the raspberry pi operating system is just a Debian derivative.