What is the equivalent to Scientific Linux Users as a professional trouble shooting email list for Ubuntu?

All of my Linux machines, servers and laptop/workstations, were running Enterprise Linux under the Scientific Linux distro from Fermilab/Cern.

With the demise of that distro (no SL8), we weighed our alternatives and have elected Ubuntu LTS. The machine from which I am posting this is a mobile workstation ("professional" laptop -- HP Zbook) now running Ubuntu 20.04.1 LTS.

With Red Hat, as with SuSE, the only lists available to those who do not license the product (technically, the installable "supported" port/distro) is not the same as the SL Users list that regularly have other experienced professionals posting and responding.

When it became apparent that some of the current non-beta production releases of applications we needed were no longer compatible with SL 7, but needed EL 8, the switch to Ubuntu LTS was undertaken. Is there any list other than this website that is the equivalent of the SL Users list that had answers from the professional paid maintainers of SL (at Fermilab) and from those who maintained EL repositories (e.g., ELrepo)?

Thank you any information. I am not allowed to post this to META where I suspect the question belongs because I do not have a 5 or higher. Take care. Stay safe.

The hub for Ubuntu development is Launchpad. I do not know whether it will meet your needs, or if there is anything closer to what you want. You can take their tour to explore. There are Teams which have mailing lists, and Launchpad Answers which has Q&A with the participation of developers.

It depends on your topic. Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. Bioinformatics Q&A is a question and answer site for people interested in bioinformatics.

If your question does not fall into one of these categories try either Ask Ubuntu if your question is about using software in Ubuntu or Stack Overflow if it's about programming. If your other questions at Ask Ubuntu are any indication your current interests are about evenly split between Ask Ubuntu and Stack Overflow.