You can always simplify your IT and require everyone to use only a small subset of Linux images which were preapproved by your security team. And you can make those to be only deb or rpm based Linux distributions.
The only problem with these Linux based packaging for deployments are Mac users and their dev environment. Linux users are usually fine, but there always had to be some Docker like setup for Mac users.
If we could say that our servers run on Linux and all users run on some Linux (WSL for Windows users) then deployments could have been simple and reproducible rpm based deployments for code and rpm packages containing systemd configuration.
I'm guessing they meant to say package formats, in which case they'd be deb and rpm. Those were the only two that are really common in server deployments running linux I'd guess.
dnf is a frontend to rpm, snap is not common for server use-cases, nix is interesting but not common, dpkg is a tool for installing .deb.
dpkg, rpm, nix, snap, dnf, and I'm sure someone is going to respond with package managers I forgot.