Yes, I know so much of Alpine’s lightweightness comes from not using glibc.
But still, the other options I see are far from being slimmed down. Debian, Ubuntu server, CentOS… They all could use some cuts.
What’s the most slimmed down non-desktop distro that still has a glibc base? I honestly don’t care if it has its own package manager (build tool handles this for me). Just wanna use it in containers for running server apps.
Gentoo can be made very slim, and has similarities with Alpine. Also as others have said, Arch is very customisable, and Void is the new hotness in this area.