For me
Mint
Manjaro
Zorin
Garuda
Neon
Gentoo isn’t hard either, but it assumes you need what it offers. If you don’t actively want to recompile this and that package with a custom combination of features then it’s wasted and its normal way of doing things seems cumbersome.
The Gentoo install isn’t hard, it’s very methodical. But it is a much more in-depth process than Arch, that’s for sure. Granted these days Gentoo seems to only do Stage 3 installs which is half the system in a tarball anyway. The way people spoke about getting through the Arch install I was thinking it would be a step-by-step process like Gentoo is. It’s really not.