Maybe for your personal workstation this might be the experience you have.
But from my experience for enterprise there is RHEL, Suse and maybe Ubuntu Pro.
If you are an AWS Enterprise customer you might justify Amazon Linux
Also Oracle Linux and CIQ's version of Rocky, albeit in rather different niches.
I think Ubuntu Pro is more common in service providers that sell to enterprises rather than in enterprises themselves. It enables them to say "yes, we comply with all of these box-ticking standards that you require your vendors to have!" without bringing in much of the rest of the enterprise baggage.
SuSE is used more heavily than any of them - as others have said, they're used more or less everywhere where SAP is to be found, and they're very strong in the HPC space too.
I think Ubuntu Pro is more common in service providers that sell to enterprises rather than in enterprises themselves. It enables them to say "yes, we comply with all of these box-ticking standards that you require your vendors to have!" without bringing in much of the rest of the enterprise baggage.
SuSE is used more heavily than any of them - as others have said, they're used more or less everywhere where SAP is to be found, and they're very strong in the HPC space too.