MIPS seems to be quite widely supported (about as much as PPC64LE) despite that I’m not able to find anything that uses MIPSLE/MIPS64LE. Are they only supported for QEMU or is there anything that still uses it? Do you know of anything to play around with Linux for MIPSLE/MIPS64LE that isn’t emulation?
IIRC, SixOS is built for MIPS systems and runs quite well on them with lots of VERY futuristic options (the most impressive he calls “ownerboot”).
https://media.ccc.de/v/38c3-sixos-a-nix-os-without-systemd
https://codeberg.org/amjoseph/sixos