OpenSuse is essentially free marketing for SUSE, nobody would know them otherwise
I’ve been working for big enterprises for many years, SUSE is used in enterprise environment to run SAP systems because it’s recommended by SAP, OpenSuse has nothing to do with that.
LMDE (Mint Cinnamon)
True, it’s the desktop manager that can make a difference but you can install any DE on any distro.
What are corporate users using?
Windows on PCs, Linux is used mostly only on servers (RedHat/SuSe), hardware brands are usually HP, Dell and Lenovo.
I think that is my standard
Why? Do you expect companies to ask you to use your own PC for work instead of providing the tools you need? Be wary of those who do, using whatever personal PC for company work can lead to data breaches and that’s a very serious problem.
Many years ago at work, when PCs started to spread, I taught a 60 years old lady how to use one. She never saw a PC before yet she learned pretty well, and I saw much younger people not learning.
Being willing to learn doesn’t depend on age, it’s a mindset, either you have it or you don’t, and if you do have it, it will last your entire life.