Alpine also has a lesser known RPi build on their download page; by using musl instead of glibc the difference in size and resources used compared to regular distros is huge as well.
https://alpinelinux.org/downloads/
>>square+(OP)
I recently put Alpine with i3 on a Raspberry Pi 4 Model B and I'm super impressed with how snappy it is. I find it much better even than Raspberry Pi OS Lite.