If we're plugging tools we use to make Debian packages without dealing with the insanity of Debian tooling, I use debbuild[1] with OBS[2] for the bulk of my packaging at work for Debian/Ubuntu systems.

As it turns out, it doesn't take that much effort to make packages that comply with Fedora/openSUSE Packaging Guidelines and Debian Policy with this tool, and it has drastically simplified my ability to maintain software across distributions in a way that still cleanly integrates with the distribution platform.

This is how the Spacewalk Debian/Ubuntu client packages are built[3][4], among many other things. There's also a few other examples out in the wild[5][6][7].

At least for the stuff I make for myself, I haven't made packages that fully pass lintian, but it's not terribly difficult to do if you want to.

[1]: https://github.com/ascherer/debbuild

[2]: https://openbuildservice.org/

[3]: https://gitlab.com/datto/engineering/spacewalk-debian-client...

[4]: https://build.opensuse.org/project/show/systemsmanagement:sp...

[5]: https://pagure.io/python36-flatpkg-deb

[6]: https://pagure.io/rpmdevtools-deb

[7]: https://build.opensuse.org/package/view_file/Virtualization:...