AlmaLinux

 Almalinux  a RHEL clone

Alpine Linux

penguins-eggs on  Alpine  is actually break.

Arch

Adding  Arch was laborious, but it was possible, because the project started and evolved to be as universal as possible.

Debian

Penguins' eggs started on Debian in 2017, it still supports jessie, stretch, buster, bullseye, bookworm and  trixie 

Devuan

Devuan:  daedalus, excalibur,

fedora

Fedora 41: It's your Operating System.

Linuxmint

 Linuxmint and virtually every Debian, Devuan and Ubuntu derivatives are supported.

Manjaro

penguins-eggs is part of community repo of Manjaro.

openmamba

openmamba is an operating system based on the Linux kernel but is not a derivative of other distributions.

OpenSuSE

OpenSuSE, the makers' choice for sysadmins, developers and desktop users.

Rocky

RockyLinux a RHEL clone.

Ubuntu

Ubuntu is full supported: bionic, noble